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hsmusic-wiki - HSMusic - static wiki software cataloguing collaborative creation
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-rw-r--r--src/data/composite/things/track/alwaysReferenceByDirectory.js69
-rw-r--r--src/data/composite/things/track/index.js16
-rw-r--r--src/data/composite/things/track/inheritContributionListFromMainRelease.js (renamed from src/data/composite/things/track/inheritContributionListFromOriginalRelease.js)20
-rw-r--r--src/data/composite/things/track/inheritFromMainRelease.js (renamed from src/data/composite/things/track/inheritFromOriginalRelease.js)18
-rw-r--r--src/data/composite/things/track/trackAdditionalNameList.js38
-rw-r--r--src/data/composite/things/track/trackReverseReferenceList.js38
-rw-r--r--src/data/composite/things/track/withAlbum.js22
-rw-r--r--src/data/composite/things/track/withAllReleases.js50
-rw-r--r--src/data/composite/things/track/withAlwaysReferenceByDirectory.js105
-rw-r--r--src/data/composite/things/track/withContainingTrackSection.js6
-rw-r--r--src/data/composite/things/track/withCoverArtistContribs.js73
-rw-r--r--src/data/composite/things/track/withDate.js8
-rw-r--r--src/data/composite/things/track/withDirectorySuffix.js22
-rw-r--r--src/data/composite/things/track/withHasUniqueCoverArt.js76
-rw-r--r--src/data/composite/things/track/withMainRelease.js137
-rw-r--r--src/data/composite/things/track/withMainReleaseTrack.js248
-rw-r--r--src/data/composite/things/track/withOriginalRelease.js78
-rw-r--r--src/data/composite/things/track/withOtherReleases.js30
-rw-r--r--src/data/composite/things/track/withPropertyFromAlbum.js18
-rw-r--r--src/data/composite/things/track/withPropertyFromMainRelease.js (renamed from src/data/composite/things/track/withPropertyFromOriginalRelease.js)36
-rw-r--r--src/data/composite/things/track/withSuffixDirectoryFromAlbum.js20
-rw-r--r--src/data/composite/things/track/withTrackArtDate.js24
-rw-r--r--src/data/composite/things/track/withTrackNumber.js50
23 files changed, 784 insertions, 418 deletions
diff --git a/src/data/composite/things/track/alwaysReferenceByDirectory.js b/src/data/composite/things/track/alwaysReferenceByDirectory.js
new file mode 100644
index 00000000..a342d38b
--- /dev/null
+++ b/src/data/composite/things/track/alwaysReferenceByDirectory.js
@@ -0,0 +1,69 @@
+// Controls how find.track works - it'll never be matched by a reference
+// just to the track's name, which means you don't have to always reference
+// some *other* (much more commonly referenced) track by directory instead
+// of more naturally by name.
+
+import {input, templateCompositeFrom} from '#composite';
+import {isBoolean} from '#validators';
+import {getKebabCase} from '#wiki-data';
+
+import {withPropertyFromObject} from '#composite/data';
+
+import {
+  exitWithoutDependency,
+  exposeDependencyOrContinue,
+  exposeUpdateValueOrContinue,
+} from '#composite/control-flow';
+
+import withMainReleaseTrack from './withMainReleaseTrack.js';
+import withPropertyFromAlbum from './withPropertyFromAlbum.js';
+
+export default templateCompositeFrom({
+  annotation: `alwaysReferenceByDirectory`,
+
+  compose: false,
+
+  steps: () => [
+    exposeUpdateValueOrContinue({
+      validate: input.value(isBoolean),
+    }),
+
+    withPropertyFromAlbum({
+      property: input.value('alwaysReferenceTracksByDirectory'),
+    }),
+
+    // Falsy mode means this exposes true if the album's property is true,
+    // but continues if the property is false (which is also the default).
+    exposeDependencyOrContinue({
+      dependency: '#album.alwaysReferenceTracksByDirectory',
+      mode: input.value('falsy'),
+    }),
+
+    exitWithoutDependency({
+      dependency: 'mainRelease',
+      value: input.value(false),
+    }),
+
+    withMainReleaseTrack(),
+
+    exitWithoutDependency({
+      dependency: '#mainReleaseTrack',
+      value: input.value(false),
+    }),
+
+    withPropertyFromObject({
+      object: '#mainReleaseTrack',
+      property: input.value('name'),
+    }),
+
+    {
+      dependencies: ['name', '#mainReleaseTrack.name'],
+      compute: ({
+        ['name']: name,
+        ['#mainReleaseTrack.name']: mainReleaseName,
+      }) =>
+        getKebabCase(name) ===
+        getKebabCase(mainReleaseName),
+    },
+  ],
+});
diff --git a/src/data/composite/things/track/index.js b/src/data/composite/things/track/index.js
index 05ccaaba..1c203cd9 100644
--- a/src/data/composite/things/track/index.js
+++ b/src/data/composite/things/track/index.js
@@ -1,16 +1,18 @@
+export {default as alwaysReferenceByDirectory} from './alwaysReferenceByDirectory.js';
 export {default as exitWithoutUniqueCoverArt} from './exitWithoutUniqueCoverArt.js';
-export {default as inheritContributionListFromOriginalRelease} from './inheritContributionListFromOriginalRelease.js';
-export {default as inheritFromOriginalRelease} from './inheritFromOriginalRelease.js';
-export {default as trackReverseReferenceList} from './trackReverseReferenceList.js';
-export {default as withAlbum} from './withAlbum.js';
-export {default as withAlwaysReferenceByDirectory} from './withAlwaysReferenceByDirectory.js';
+export {default as inheritContributionListFromMainRelease} from './inheritContributionListFromMainRelease.js';
+export {default as inheritFromMainRelease} from './inheritFromMainRelease.js';
+export {default as withAllReleases} from './withAllReleases.js';
 export {default as withContainingTrackSection} from './withContainingTrackSection.js';
+export {default as withCoverArtistContribs} from './withCoverArtistContribs.js';
 export {default as withDate} from './withDate.js';
 export {default as withDirectorySuffix} from './withDirectorySuffix.js';
 export {default as withHasUniqueCoverArt} from './withHasUniqueCoverArt.js';
-export {default as withOriginalRelease} from './withOriginalRelease.js';
+export {default as withMainRelease} from './withMainRelease.js';
+export {default as withMainReleaseTrack} from './withMainReleaseTrack.js';
 export {default as withOtherReleases} from './withOtherReleases.js';
 export {default as withPropertyFromAlbum} from './withPropertyFromAlbum.js';
-export {default as withPropertyFromOriginalRelease} from './withPropertyFromOriginalRelease.js';
+export {default as withPropertyFromMainRelease} from './withPropertyFromMainRelease.js';
 export {default as withSuffixDirectoryFromAlbum} from './withSuffixDirectoryFromAlbum.js';
 export {default as withTrackArtDate} from './withTrackArtDate.js';
+export {default as withTrackNumber} from './withTrackNumber.js';
diff --git a/src/data/composite/things/track/inheritContributionListFromOriginalRelease.js b/src/data/composite/things/track/inheritContributionListFromMainRelease.js
index f4ae3ddb..89252feb 100644
--- a/src/data/composite/things/track/inheritContributionListFromOriginalRelease.js
+++ b/src/data/composite/things/track/inheritContributionListFromMainRelease.js
@@ -1,5 +1,5 @@
-// Like inheritFromOriginalRelease, but tuned for contributions.
-// Recontextualized contributions for this track.
+// Like inheritFromMainRelease, but tuned for contributions.
+// Recontextualizes contributions for this track.
 
 import {input, templateCompositeFrom} from '#composite';
 
@@ -9,36 +9,36 @@ import {withRecontextualizedContributionList, withRedatedContributionList}
   from '#composite/wiki-data';
 
 import withDate from './withDate.js';
-import withPropertyFromOriginalRelease
-  from './withPropertyFromOriginalRelease.js';
+import withPropertyFromMainRelease
+  from './withPropertyFromMainRelease.js';
 
 export default templateCompositeFrom({
-  annotation: `inheritContributionListFromOriginalRelease`,
+  annotation: `inheritContributionListFromMainRelease`,
 
   steps: () => [
-    withPropertyFromOriginalRelease({
+    withPropertyFromMainRelease({
       property: input.thisProperty(),
       notFoundValue: input.value([]),
     }),
 
     raiseOutputWithoutDependency({
-      dependency: '#isRerelease',
+      dependency: '#isSecondaryRelease',
       mode: input.value('falsy'),
     }),
 
     withRecontextualizedContributionList({
-      list: '#originalValue',
+      list: '#mainReleaseValue',
     }),
 
     withDate(),
 
     withRedatedContributionList({
-      list: '#originalValue',
+      list: '#mainReleaseValue',
       date: '#date',
     }),
 
     exposeDependency({
-      dependency: '#originalValue',
+      dependency: '#mainReleaseValue',
     }),
   ],
 });
diff --git a/src/data/composite/things/track/inheritFromOriginalRelease.js b/src/data/composite/things/track/inheritFromMainRelease.js
index 38ab06be..b1cbb65e 100644
--- a/src/data/composite/things/track/inheritFromOriginalRelease.js
+++ b/src/data/composite/things/track/inheritFromMainRelease.js
@@ -1,9 +1,9 @@
 // Early exits with the value for the same property as specified on the
-// original release, if this track is a rerelease, and otherwise continues
+// main release, if this track is a secondary release, and otherwise continues
 // without providing any further dependencies.
 //
-// Like withOriginalRelease, this will early exit (with notFoundValue) if the
-// original release is specified by reference and that reference doesn't
+// Like withMainRelease, this will early exit (with notFoundValue) if the
+// main release is specified by reference and that reference doesn't
 // resolve to anything.
 
 import {input, templateCompositeFrom} from '#composite';
@@ -11,11 +11,11 @@ import {input, templateCompositeFrom} from '#composite';
 import {exposeDependency, raiseOutputWithoutDependency}
   from '#composite/control-flow';
 
-import withPropertyFromOriginalRelease
-  from './withPropertyFromOriginalRelease.js';
+import withPropertyFromMainRelease
+  from './withPropertyFromMainRelease.js';
 
 export default templateCompositeFrom({
-  annotation: `inheritFromOriginalRelease`,
+  annotation: `inheritFromMainRelease`,
 
   inputs: {
     notFoundValue: input({
@@ -24,18 +24,18 @@ export default templateCompositeFrom({
   },
 
   steps: () => [
-    withPropertyFromOriginalRelease({
+    withPropertyFromMainRelease({
       property: input.thisProperty(),
       notFoundValue: input('notFoundValue'),
     }),
 
     raiseOutputWithoutDependency({
-      dependency: '#isRerelease',
+      dependency: '#isSecondaryRelease',
       mode: input.value('falsy'),
     }),
 
     exposeDependency({
-      dependency: '#originalValue',
+      dependency: '#mainReleaseValue',
     }),
   ],
 });
diff --git a/src/data/composite/things/track/trackAdditionalNameList.js b/src/data/composite/things/track/trackAdditionalNameList.js
deleted file mode 100644
index 65a2263d..00000000
--- a/src/data/composite/things/track/trackAdditionalNameList.js
+++ /dev/null
@@ -1,38 +0,0 @@
-// Compiles additional names from various sources.
-
-import {input, templateCompositeFrom} from '#composite';
-import {isAdditionalNameList} from '#validators';
-
-import withInferredAdditionalNames from './withInferredAdditionalNames.js';
-import withSharedAdditionalNames from './withSharedAdditionalNames.js';
-
-export default templateCompositeFrom({
-  annotation: `trackAdditionalNameList`,
-
-  compose: false,
-
-  update: {validate: isAdditionalNameList},
-
-  steps: () => [
-    withInferredAdditionalNames(),
-    withSharedAdditionalNames(),
-
-    {
-      dependencies: [
-        '#inferredAdditionalNames',
-        '#sharedAdditionalNames',
-        input.updateValue(),
-      ],
-
-      compute: ({
-        ['#inferredAdditionalNames']: inferredAdditionalNames,
-        ['#sharedAdditionalNames']: sharedAdditionalNames,
-        [input.updateValue()]: providedAdditionalNames,
-      }) => [
-        ...providedAdditionalNames ?? [],
-        ...sharedAdditionalNames,
-        ...inferredAdditionalNames,
-      ],
-    },
-  ],
-});
diff --git a/src/data/composite/things/track/trackReverseReferenceList.js b/src/data/composite/things/track/trackReverseReferenceList.js
deleted file mode 100644
index 44940ae7..00000000
--- a/src/data/composite/things/track/trackReverseReferenceList.js
+++ /dev/null
@@ -1,38 +0,0 @@
-// Like a normal reverse reference list ("objects which reference this object
-// under a specified property"), only excluding rereleases from the possible
-// outputs. While it's useful to travel from a rerelease to the tracks it
-// references, rereleases aren't generally relevant from the perspective of
-// the tracks *being* referenced. Apart from hiding rereleases from lists on
-// the site, it also excludes keeps them from relational data processing, such
-// as on the "Tracks - by Times Referenced" listing page.
-
-import {input, templateCompositeFrom} from '#composite';
-import {withReverseReferenceList} from '#composite/wiki-data';
-
-export default templateCompositeFrom({
-  annotation: `trackReverseReferenceList`,
-
-  compose: false,
-
-  inputs: {
-    list: input({type: 'string'}),
-  },
-
-  steps: () => [
-    withReverseReferenceList({
-      data: 'trackData',
-      list: input('list'),
-    }),
-
-    {
-      flags: {expose: true},
-      expose: {
-        dependencies: ['#reverseReferenceList'],
-        compute: ({
-          ['#reverseReferenceList']: reverseReferenceList,
-        }) =>
-          reverseReferenceList.filter(track => !track.originalReleaseTrack),
-      },
-    },
-  ],
-});
diff --git a/src/data/composite/things/track/withAlbum.js b/src/data/composite/things/track/withAlbum.js
deleted file mode 100644
index 03b840d4..00000000
--- a/src/data/composite/things/track/withAlbum.js
+++ /dev/null
@@ -1,22 +0,0 @@
-// Gets the track's album. This will early exit if albumData is missing.
-// If there's no album whose list of tracks includes this track, the output
-// dependency will be null.
-
-import {input, templateCompositeFrom} from '#composite';
-
-import {withUniqueReferencingThing} from '#composite/wiki-data';
-
-export default templateCompositeFrom({
-  annotation: `withAlbum`,
-
-  outputs: ['#album'],
-
-  steps: () => [
-    withUniqueReferencingThing({
-      data: 'albumData',
-      list: input.value('tracks'),
-    }).outputs({
-      ['#uniqueReferencingThing']: '#album',
-    }),
-  ],
-});
diff --git a/src/data/composite/things/track/withAllReleases.js b/src/data/composite/things/track/withAllReleases.js
new file mode 100644
index 00000000..bd54384f
--- /dev/null
+++ b/src/data/composite/things/track/withAllReleases.js
@@ -0,0 +1,50 @@
+// Gets all releases of the current track. All items of the outputs are
+// distinct Track objects; one track is the main release; all else are
+// secondary releases of that main release; and one item, which may be
+// the main release or one of the secondary releases, is the current
+// track. The results are sorted by date, and it is possible that the
+// main release is not actually the earliest/first.
+
+import {input, templateCompositeFrom} from '#composite';
+import {sortByDate} from '#sort';
+
+import {withPropertyFromObject} from '#composite/data';
+
+import withMainReleaseTrack from './withMainReleaseTrack.js';
+
+export default templateCompositeFrom({
+  annotation: `withAllReleases`,
+
+  outputs: ['#allReleases'],
+
+  steps: () => [
+    withMainReleaseTrack({
+      selfIfMain: input.value(true),
+      notFoundValue: input.value([]),
+    }),
+
+    // We don't talk about bruno no no
+    // Yes, this can perform a normal access equivalent to
+    // `this.secondaryReleases` from within a data composition.
+    // Oooooooooooooooooooooooooooooooooooooooooooooooo
+    withPropertyFromObject({
+      object: '#mainReleaseTrack',
+      property: input.value('secondaryReleases'),
+    }),
+
+    {
+      dependencies: [
+        '#mainReleaseTrack',
+        '#mainReleaseTrack.secondaryReleases',
+      ],
+
+      compute: (continuation, {
+        ['#mainReleaseTrack']: mainReleaseTrack,
+        ['#mainReleaseTrack.secondaryReleases']: secondaryReleases,
+      }) => continuation({
+        ['#allReleases']:
+          sortByDate([mainReleaseTrack, ...secondaryReleases]),
+      }),
+    },
+  ],
+});
diff --git a/src/data/composite/things/track/withAlwaysReferenceByDirectory.js b/src/data/composite/things/track/withAlwaysReferenceByDirectory.js
deleted file mode 100644
index e01720b4..00000000
--- a/src/data/composite/things/track/withAlwaysReferenceByDirectory.js
+++ /dev/null
@@ -1,105 +0,0 @@
-// Controls how find.track works - it'll never be matched by a reference
-// just to the track's name, which means you don't have to always reference
-// some *other* (much more commonly referenced) track by directory instead
-// of more naturally by name.
-
-import {input, templateCompositeFrom} from '#composite';
-import find from '#find';
-import {isBoolean} from '#validators';
-
-import {withPropertyFromObject} from '#composite/data';
-import {withResolvedReference} from '#composite/wiki-data';
-
-import {
-  exitWithoutDependency,
-  exposeDependencyOrContinue,
-  exposeUpdateValueOrContinue,
-} from '#composite/control-flow';
-
-export default templateCompositeFrom({
-  annotation: `withAlwaysReferenceByDirectory`,
-
-  outputs: ['#alwaysReferenceByDirectory'],
-
-  steps: () => [
-    exposeUpdateValueOrContinue({
-      validate: input.value(isBoolean),
-    }),
-
-    // withAlwaysReferenceByDirectory is sort of a fragile area - we can't
-    // find the track's album the normal way because albums' track lists
-    // recurse back into alwaysReferenceByDirectory!
-    withResolvedReference({
-      ref: 'dataSourceAlbum',
-      data: 'albumData',
-      find: input.value(find.album),
-    }).outputs({
-      '#resolvedReference': '#album',
-    }),
-
-    withPropertyFromObject({
-      object: '#album',
-      property: input.value('alwaysReferenceTracksByDirectory'),
-    }),
-
-    // Falsy mode means this exposes true if the album's property is true,
-    // but continues if the property is false (which is also the default).
-    exposeDependencyOrContinue({
-      dependency: '#album.alwaysReferenceTracksByDirectory',
-      mode: input.value('falsy'),
-    }),
-
-    // Remaining code is for defaulting to true if this track is a rerelease of
-    // another with the same name, so everything further depends on access to
-    // trackData as well as originalReleaseTrack.
-
-    exitWithoutDependency({
-      dependency: 'trackData',
-      mode: input.value('empty'),
-      value: input.value(false),
-    }),
-
-    exitWithoutDependency({
-      dependency: 'originalReleaseTrack',
-      value: input.value(false),
-    }),
-
-    // It's necessary to use the custom trackOriginalReleasesOnly find function
-    // here, so as to avoid recursion issues - the find.track() function depends
-    // on accessing each track's alwaysReferenceByDirectory, which means it'll
-    // hit *this track* - and thus this step - and end up recursing infinitely.
-    // By definition, find.trackOriginalReleasesOnly excludes tracks which have
-    // an originalReleaseTrack update value set, which means even though it does
-    // still access each of tracks' `alwaysReferenceByDirectory` property, it
-    // won't access that of *this* track - it will never proceed past the
-    // `exitWithoutDependency` step directly above, so there's no opportunity
-    // for recursion.
-    withResolvedReference({
-      ref: 'originalReleaseTrack',
-      data: 'trackData',
-      find: input.value(find.trackOriginalReleasesOnly),
-    }).outputs({
-      '#resolvedReference': '#originalRelease',
-    }),
-
-    exitWithoutDependency({
-      dependency: '#originalRelease',
-      value: input.value(false),
-    }),
-
-    withPropertyFromObject({
-      object: '#originalRelease',
-      property: input.value('name'),
-    }),
-
-    {
-      dependencies: ['name', '#originalRelease.name'],
-      compute: (continuation, {
-        name,
-        ['#originalRelease.name']: originalName,
-      }) => continuation({
-        ['#alwaysReferenceByDirectory']: name === originalName,
-      }),
-    },
-  ],
-});
diff --git a/src/data/composite/things/track/withContainingTrackSection.js b/src/data/composite/things/track/withContainingTrackSection.js
index 9bbd9bd5..3d4d081e 100644
--- a/src/data/composite/things/track/withContainingTrackSection.js
+++ b/src/data/composite/things/track/withContainingTrackSection.js
@@ -1,8 +1,9 @@
 // Gets the track section containing this track from its album's track list.
 
-import {input, templateCompositeFrom} from '#composite';
+import {templateCompositeFrom} from '#composite';
 
 import {withUniqueReferencingThing} from '#composite/wiki-data';
+import {soupyReverse} from '#composite/wiki-properties';
 
 export default templateCompositeFrom({
   annotation: `withContainingTrackSection`,
@@ -11,8 +12,7 @@ export default templateCompositeFrom({
 
   steps: () => [
     withUniqueReferencingThing({
-      data: 'trackSectionData',
-      list: input.value('tracks'),
+      reverse: soupyReverse.input('trackSectionsWhichInclude'),
     }).outputs({
       ['#uniqueReferencingThing']: '#trackSection',
     }),
diff --git a/src/data/composite/things/track/withCoverArtistContribs.js b/src/data/composite/things/track/withCoverArtistContribs.js
new file mode 100644
index 00000000..9057cfeb
--- /dev/null
+++ b/src/data/composite/things/track/withCoverArtistContribs.js
@@ -0,0 +1,73 @@
+import {input, templateCompositeFrom} from '#composite';
+import {isContributionList} from '#validators';
+
+import {exposeDependencyOrContinue} from '#composite/control-flow';
+
+import {
+  withRecontextualizedContributionList,
+  withRedatedContributionList,
+  withResolvedContribs,
+} from '#composite/wiki-data';
+
+import exitWithoutUniqueCoverArt from './exitWithoutUniqueCoverArt.js';
+import withPropertyFromAlbum from './withPropertyFromAlbum.js';
+import withTrackArtDate from './withTrackArtDate.js';
+
+export default templateCompositeFrom({
+  annotation: `withCoverArtistContribs`,
+
+  inputs: {
+    from: input({
+      defaultDependency: 'coverArtistContribs',
+      validate: isContributionList,
+      acceptsNull: true,
+    }),
+  },
+
+  outputs: ['#coverArtistContribs'],
+
+  steps: () => [
+    exitWithoutUniqueCoverArt({
+      value: input.value([]),
+    }),
+
+    withTrackArtDate(),
+
+    withResolvedContribs({
+      from: input('from'),
+      thingProperty: input.value('coverArtistContribs'),
+      artistProperty: input.value('trackCoverArtistContributions'),
+      date: '#trackArtDate',
+    }).outputs({
+      '#resolvedContribs': '#coverArtistContribs',
+    }),
+
+    exposeDependencyOrContinue({
+      dependency: '#coverArtistContribs',
+      mode: input.value('empty'),
+    }),
+
+    withPropertyFromAlbum({
+      property: input.value('trackCoverArtistContribs'),
+    }),
+
+    withRecontextualizedContributionList({
+      list: '#album.trackCoverArtistContribs',
+      artistProperty: input.value('trackCoverArtistContributions'),
+    }),
+
+    withRedatedContributionList({
+      list: '#album.trackCoverArtistContribs',
+      date: '#trackArtDate',
+    }),
+
+    {
+      dependencies: ['#album.trackCoverArtistContribs'],
+      compute: (continuation, {
+        ['#album.trackCoverArtistContribs']: coverArtistContribs,
+      }) => continuation({
+        ['#coverArtistContribs']: coverArtistContribs,
+      }),
+    },
+  ],
+});
diff --git a/src/data/composite/things/track/withDate.js b/src/data/composite/things/track/withDate.js
index b5a770e9..1851c0d2 100644
--- a/src/data/composite/things/track/withDate.js
+++ b/src/data/composite/things/track/withDate.js
@@ -12,6 +12,14 @@ export default templateCompositeFrom({
 
   steps: () => [
     {
+      dependencies: ['disableDate'],
+      compute: (continuation, {disableDate}) =>
+        (disableDate
+          ? continuation.raiseOutput({'#date': null})
+          : continuation()),
+    },
+
+    {
       dependencies: ['dateFirstReleased'],
       compute: (continuation, {dateFirstReleased}) =>
         (dateFirstReleased
diff --git a/src/data/composite/things/track/withDirectorySuffix.js b/src/data/composite/things/track/withDirectorySuffix.js
index c063e158..c3651491 100644
--- a/src/data/composite/things/track/withDirectorySuffix.js
+++ b/src/data/composite/things/track/withDirectorySuffix.js
@@ -1,8 +1,9 @@
 import {input, templateCompositeFrom} from '#composite';
 
 import {raiseOutputWithoutDependency} from '#composite/control-flow';
+import {withPropertyFromObject} from '#composite/data';
 
-import withPropertyFromAlbum from './withPropertyFromAlbum.js';
+import withContainingTrackSection from './withContainingTrackSection.js';
 import withSuffixDirectoryFromAlbum from './withSuffixDirectoryFromAlbum.js';
 
 export default templateCompositeFrom({
@@ -16,21 +17,16 @@ export default templateCompositeFrom({
     raiseOutputWithoutDependency({
       dependency: '#suffixDirectoryFromAlbum',
       mode: input.value('falsy'),
-      output: input.value({['#directorySuffix']: null}),
+      output: input.value({'#directorySuffix': null}),
     }),
 
-    withPropertyFromAlbum({
+    withContainingTrackSection(),
+
+    withPropertyFromObject({
+      object: '#trackSection',
       property: input.value('directorySuffix'),
+    }).outputs({
+      '#trackSection.directorySuffix': '#directorySuffix',
     }),
-
-    {
-      dependencies: ['#album.directorySuffix'],
-      compute: (continuation, {
-        ['#album.directorySuffix']: directorySuffix,
-      }) => continuation({
-        ['#directorySuffix']:
-          directorySuffix,
-      }),
-    },
   ],
 });
diff --git a/src/data/composite/things/track/withHasUniqueCoverArt.js b/src/data/composite/things/track/withHasUniqueCoverArt.js
index f7e65f25..85d3b92a 100644
--- a/src/data/composite/things/track/withHasUniqueCoverArt.js
+++ b/src/data/composite/things/track/withHasUniqueCoverArt.js
@@ -5,11 +5,18 @@
 // or a placeholder. (This property is named hasUniqueCoverArt instead of
 // the usual hasCoverArt to emphasize that it does not inherit from the
 // album.)
+//
+// withHasUniqueCoverArt is based only around the presence of *specified*
+// cover artist contributions, not whether the references to artists on those
+// contributions actually resolve to anything. It completely evades interacting
+// with find/replace.
 
 import {input, templateCompositeFrom} from '#composite';
-import {empty} from '#sugar';
 
-import {withResolvedContribs} from '#composite/wiki-data';
+import {raiseOutputWithoutDependency, withResultOfAvailabilityCheck}
+  from '#composite/control-flow';
+import {fillMissingListItems, withFlattenedList, withPropertyFromList}
+  from '#composite/data';
 
 import withPropertyFromAlbum from './withPropertyFromAlbum.js';
 
@@ -29,36 +36,73 @@ export default templateCompositeFrom({
           : continuation()),
     },
 
-    withResolvedContribs({
+    withResultOfAvailabilityCheck({
       from: 'coverArtistContribs',
-      date: input.value(null),
+      mode: input.value('empty'),
     }),
 
     {
-      dependencies: ['#resolvedContribs'],
+      dependencies: ['#availability'],
       compute: (continuation, {
-        ['#resolvedContribs']: contribsFromTrack,
+        ['#availability']: availability,
       }) =>
-        (empty(contribsFromTrack)
-          ? continuation()
-          : continuation.raiseOutput({
+        (availability
+          ? continuation.raiseOutput({
               ['#hasUniqueCoverArt']: true,
-            })),
+            })
+          : continuation()),
     },
 
     withPropertyFromAlbum({
       property: input.value('trackCoverArtistContribs'),
+      internal: input.value(true),
+    }),
+
+    withResultOfAvailabilityCheck({
+      from: '#album.trackCoverArtistContribs',
+      mode: input.value('empty'),
     }),
 
     {
-      dependencies: ['#album.trackCoverArtistContribs'],
+      dependencies: ['#availability'],
       compute: (continuation, {
-        ['#album.trackCoverArtistContribs']: contribsFromAlbum,
+        ['#availability']: availability,
       }) =>
-        continuation.raiseOutput({
-          ['#hasUniqueCoverArt']:
-            !empty(contribsFromAlbum),
-        }),
+        (availability
+          ? continuation.raiseOutput({
+              ['#hasUniqueCoverArt']: true,
+            })
+          : continuation()),
     },
+
+    raiseOutputWithoutDependency({
+      dependency: 'trackArtworks',
+      mode: input.value('empty'),
+      output: input.value({'#hasUniqueCoverArt': false}),
+    }),
+
+    withPropertyFromList({
+      list: 'trackArtworks',
+      property: input.value('artistContribs'),
+      internal: input.value(true),
+    }),
+
+    // Since we're getting the update value for each artwork's artistContribs,
+    // it may not be set at all, and in that case won't be exposing as [].
+    fillMissingListItems({
+      list: '#trackArtworks.artistContribs',
+      fill: input.value([]),
+    }),
+
+    withFlattenedList({
+      list: '#trackArtworks.artistContribs',
+    }),
+
+    withResultOfAvailabilityCheck({
+      from: '#flattenedList',
+      mode: input.value('empty'),
+    }).outputs({
+      '#availability': '#hasUniqueCoverArt',
+    }),
   ],
 });
diff --git a/src/data/composite/things/track/withMainRelease.js b/src/data/composite/things/track/withMainRelease.js
new file mode 100644
index 00000000..67a312ae
--- /dev/null
+++ b/src/data/composite/things/track/withMainRelease.js
@@ -0,0 +1,137 @@
+// Resolves this track's `mainRelease` reference, using weird-ass atypical
+// machinery that operates on soupyFind and does not operate on findMixed,
+// let alone a prim and proper standalone find spec.
+//
+// Raises null only if there is no `mainRelease` reference provided at all.
+// This will early exit (with notFoundValue) if the reference doesn't resolve.
+//
+
+import {input, templateCompositeFrom} from '#composite';
+
+import {raiseOutputWithoutDependency} from '#composite/control-flow';
+import {withPropertyFromObject} from '#composite/data';
+import {withResolvedReference} from '#composite/wiki-data';
+import {soupyFind} from '#composite/wiki-properties';
+
+export default templateCompositeFrom({
+  annotation: `withMainRelease`,
+
+  inputs: {
+    from: input({
+      defaultDependency: 'mainRelease',
+      acceptsNull: true,
+    }),
+
+    notFoundValue: input({defaultValue: null}),
+  },
+
+  outputs: ['#mainRelease'],
+
+  steps: () => [
+    raiseOutputWithoutDependency({
+      dependency: input('from'),
+      output: input.value({'#mainRelease': null}),
+    }),
+
+    {
+      dependencies: [input('from'), 'name'],
+      compute: (continuation, {
+        [input('from')]: ref,
+        ['name']: ownName,
+      }) =>
+        (ref === 'same name single'
+          ? continuation({
+              ['#albumOrTrackReference']: null,
+              ['#sameNameSingleReference']: ownName,
+            })
+          : continuation({
+              ['#albumOrTrackReference']: ref,
+              ['#sameNameSingleReference']: null,
+            })),
+    },
+
+    withResolvedReference({
+      ref: '#albumOrTrackReference',
+      find: soupyFind.input('trackMainReleasesOnly'),
+    }).outputs({
+      '#resolvedReference': '#matchingTrack',
+    }),
+
+    withResolvedReference({
+      ref: '#albumOrTrackReference',
+      find: soupyFind.input('album'),
+    }).outputs({
+      '#resolvedReference': '#matchingAlbum',
+    }),
+
+    withResolvedReference({
+      ref: '#sameNameSingleReference',
+      find: soupyFind.input('albumSinglesOnly'),
+      findOptions: input.value({
+        fuzz: {
+          capitalization: true,
+          kebab: true,
+        },
+      }),
+    }).outputs({
+      '#resolvedReference': '#sameNameSingle',
+    }),
+
+    {
+      dependencies: ['#sameNameSingle'],
+      compute: (continuation, {
+        ['#sameNameSingle']: sameNameSingle,
+      }) =>
+        (sameNameSingle
+          ? continuation.raiseOutput({
+              ['#mainRelease']:
+                sameNameSingle,
+            })
+          : continuation()),
+    },
+
+    {
+      dependencies: [
+        '#matchingTrack',
+        '#matchingAlbum',
+        input('notFoundValue'),
+      ],
+
+      compute: (continuation, {
+        ['#matchingTrack']: matchingTrack,
+        ['#matchingAlbum']: matchingAlbum,
+        [input('notFoundValue')]: notFoundValue,
+      }) =>
+        (matchingTrack && matchingAlbum
+          ? continuation()
+       : matchingTrack ?? matchingAlbum
+          ? continuation.raiseOutput({
+              ['#mainRelease']:
+                matchingTrack ?? matchingAlbum,
+            })
+          : continuation.exit(notFoundValue)),
+    },
+
+    withPropertyFromObject({
+      object: '#matchingAlbum',
+      property: input.value('tracks'),
+    }),
+
+    {
+      dependencies: [
+        '#matchingAlbum.tracks',
+        '#matchingTrack',
+        input('notFoundValue'),
+      ],
+
+      compute: (continuation, {
+        ['#matchingAlbum.tracks']: matchingAlbumTracks,
+        ['#matchingTrack']: matchingTrack,
+        [input('notFoundValue')]: notFoundValue,
+      }) =>
+        (matchingAlbumTracks.includes(matchingTrack)
+          ? continuation.raiseOutput({'#mainRelease': matchingTrack})
+          : continuation.exit(notFoundValue)),
+    },
+  ],
+});
diff --git a/src/data/composite/things/track/withMainReleaseTrack.js b/src/data/composite/things/track/withMainReleaseTrack.js
new file mode 100644
index 00000000..6371e895
--- /dev/null
+++ b/src/data/composite/things/track/withMainReleaseTrack.js
@@ -0,0 +1,248 @@
+// Just provides the main release of this track as a dependency.
+// If this track isn't a secondary release, then it'll provide null, unless
+// the {selfIfMain} option is set, in which case it'll provide this track
+// itself. This will early exit (with notFoundValue) if the main release
+// is specified by reference and that reference doesn't resolve to anything.
+
+import {input, templateCompositeFrom} from '#composite';
+import {onlyItem} from '#sugar';
+import {getKebabCase} from '#wiki-data';
+
+import {
+  exitWithoutDependency,
+  withAvailabilityFilter,
+  withResultOfAvailabilityCheck,
+} from '#composite/control-flow';
+
+import {
+  withFilteredList,
+  withMappedList,
+  withPropertyFromList,
+  withPropertyFromObject,
+} from '#composite/data';
+
+import withMainRelease from './withMainRelease.js';
+
+export default templateCompositeFrom({
+  annotation: `withMainReleaseTrack`,
+
+  inputs: {
+    selfIfMain: input({type: 'boolean', defaultValue: false}),
+    notFoundValue: input({defaultValue: null}),
+  },
+
+  outputs: ['#mainReleaseTrack'],
+
+  steps: () => [
+    withResultOfAvailabilityCheck({
+      from: 'mainRelease',
+    }),
+
+    {
+      dependencies: [
+        input.myself(),
+        input('selfIfMain'),
+        '#availability',
+      ],
+
+      compute: (continuation, {
+        [input.myself()]: track,
+        [input('selfIfMain')]: selfIfMain,
+        '#availability': availability,
+      }) =>
+        (availability
+          ? continuation()
+          : continuation.raiseOutput({
+              ['#mainReleaseTrack']:
+                (selfIfMain ? track : null),
+            })),
+    },
+
+    withMainRelease(),
+
+    exitWithoutDependency({
+      dependency: '#mainRelease',
+      value: input('notFoundValue'),
+    }),
+
+    withPropertyFromObject({
+      object: '#mainRelease',
+      property: input.value('isTrack'),
+    }),
+
+    {
+      dependencies: ['#mainRelease', '#mainRelease.isTrack'],
+
+      compute: (continuation, {
+        ['#mainRelease']: mainRelease,
+        ['#mainRelease.isTrack']: mainReleaseIsTrack,
+      }) =>
+        (mainReleaseIsTrack
+          ? continuation.raiseOutput({
+              ['#mainReleaseTrack']: mainRelease,
+            })
+          : continuation()),
+    },
+
+    {
+      dependencies: ['name', 'directory'],
+      compute: (continuation, {
+        ['name']: ownName,
+        ['directory']: ownDirectory,
+      }) => {
+        const ownNameKebabed = getKebabCase(ownName);
+
+        return continuation({
+          ['#mapItsNameLikeName']:
+            name => getKebabCase(name) === ownNameKebabed,
+
+          ['#mapItsDirectoryLikeDirectory']:
+            (ownDirectory
+              ? directory => directory === ownDirectory
+              : () => false),
+
+          ['#mapItsNameLikeDirectory']:
+            (ownDirectory
+              ? name => getKebabCase(name) === ownDirectory
+              : () => false),
+
+          ['#mapItsDirectoryLikeName']:
+            directory => directory === ownNameKebabed,
+        });
+      },
+    },
+
+    withPropertyFromObject({
+      object: '#mainRelease',
+      property: input.value('tracks'),
+    }),
+
+    withPropertyFromList({
+      list: '#mainRelease.tracks',
+      property: input.value('mainRelease'),
+      internal: input.value(true),
+    }),
+
+    withAvailabilityFilter({
+      from: '#mainRelease.tracks.mainRelease',
+    }),
+
+    withMappedList({
+      list: '#availabilityFilter',
+      map: input.value(item => !item),
+    }).outputs({
+      '#mappedList': '#availabilityFilter',
+    }),
+
+    withFilteredList({
+      list: '#mainRelease.tracks',
+      filter: '#availabilityFilter',
+    }).outputs({
+      '#filteredList': '#mainRelease.tracks',
+    }),
+
+    withPropertyFromList({
+      list: '#mainRelease.tracks',
+      property: input.value('name'),
+    }),
+
+    withPropertyFromList({
+      list: '#mainRelease.tracks',
+      property: input.value('directory'),
+      internal: input.value(true),
+    }),
+
+    withMappedList({
+      list: '#mainRelease.tracks.name',
+      map: '#mapItsNameLikeName',
+    }).outputs({
+      '#mappedList': '#filterItsNameLikeName',
+    }),
+
+    withMappedList({
+      list: '#mainRelease.tracks.directory',
+      map: '#mapItsDirectoryLikeDirectory',
+    }).outputs({
+      '#mappedList': '#filterItsDirectoryLikeDirectory',
+    }),
+
+    withMappedList({
+      list: '#mainRelease.tracks.name',
+      map: '#mapItsNameLikeDirectory',
+    }).outputs({
+      '#mappedList': '#filterItsNameLikeDirectory',
+    }),
+
+    withMappedList({
+      list: '#mainRelease.tracks.directory',
+      map: '#mapItsDirectoryLikeName',
+    }).outputs({
+      '#mappedList': '#filterItsDirectoryLikeName',
+    }),
+
+    withFilteredList({
+      list: '#mainRelease.tracks',
+      filter: '#filterItsNameLikeName',
+    }).outputs({
+      '#filteredList': '#matchingItsNameLikeName',
+    }),
+
+    withFilteredList({
+      list: '#mainRelease.tracks',
+      filter: '#filterItsDirectoryLikeDirectory',
+    }).outputs({
+      '#filteredList': '#matchingItsDirectoryLikeDirectory',
+    }),
+
+    withFilteredList({
+      list: '#mainRelease.tracks',
+      filter: '#filterItsNameLikeDirectory',
+    }).outputs({
+      '#filteredList': '#matchingItsNameLikeDirectory',
+    }),
+
+    withFilteredList({
+      list: '#mainRelease.tracks',
+      filter: '#filterItsDirectoryLikeName',
+    }).outputs({
+      '#filteredList': '#matchingItsDirectoryLikeName',
+    }),
+
+    {
+      dependencies: [
+        '#matchingItsNameLikeName',
+        '#matchingItsDirectoryLikeDirectory',
+        '#matchingItsNameLikeDirectory',
+        '#matchingItsDirectoryLikeName',
+      ],
+
+      compute: (continuation, {
+        ['#matchingItsNameLikeName']:           NLN,
+        ['#matchingItsDirectoryLikeDirectory']: DLD,
+        ['#matchingItsNameLikeDirectory']:      NLD,
+        ['#matchingItsDirectoryLikeName']:      DLN,
+      }) => continuation({
+        ['#mainReleaseTrack']:
+          onlyItem(DLD) ??
+          onlyItem(NLN) ??
+          onlyItem(DLN) ??
+          onlyItem(NLD) ??
+          null,
+      }),
+    },
+
+    {
+      dependencies: ['#mainReleaseTrack', input.myself()],
+
+      compute: (continuation, {
+        ['#mainReleaseTrack']: mainReleaseTrack,
+        [input.myself()]: thisTrack,
+      }) => continuation({
+        ['#mainReleaseTrack']:
+          (mainReleaseTrack === thisTrack
+            ? null
+            : mainReleaseTrack),
+      }),
+    },
+  ],
+});
diff --git a/src/data/composite/things/track/withOriginalRelease.js b/src/data/composite/things/track/withOriginalRelease.js
deleted file mode 100644
index c7f49657..00000000
--- a/src/data/composite/things/track/withOriginalRelease.js
+++ /dev/null
@@ -1,78 +0,0 @@
-// Just includes the original release of this track as a dependency.
-// If this track isn't a rerelease, then it'll provide null, unless the
-// {selfIfOriginal} option is set, in which case it'll provide this track
-// itself. This will early exit (with notFoundValue) if the original release
-// is specified by reference and that reference doesn't resolve to anything.
-
-import {input, templateCompositeFrom} from '#composite';
-import find from '#find';
-import {validateWikiData} from '#validators';
-
-import {exitWithoutDependency, withResultOfAvailabilityCheck}
-  from '#composite/control-flow';
-import {withResolvedReference} from '#composite/wiki-data';
-
-export default templateCompositeFrom({
-  annotation: `withOriginalRelease`,
-
-  inputs: {
-    selfIfOriginal: input({type: 'boolean', defaultValue: false}),
-
-    data: input({
-      validate: validateWikiData({referenceType: 'track'}),
-      defaultDependency: 'trackData',
-    }),
-
-    notFoundValue: input({defaultValue: null}),
-  },
-
-  outputs: ['#originalRelease'],
-
-  steps: () => [
-    withResultOfAvailabilityCheck({
-      from: 'originalReleaseTrack',
-    }),
-
-    {
-      dependencies: [
-        input.myself(),
-        input('selfIfOriginal'),
-        '#availability',
-      ],
-
-      compute: (continuation, {
-        [input.myself()]: track,
-        [input('selfIfOriginal')]: selfIfOriginal,
-        '#availability': availability,
-      }) =>
-        (availability
-          ? continuation()
-          : continuation.raiseOutput({
-              ['#originalRelease']:
-                (selfIfOriginal ? track : null),
-            })),
-    },
-
-    withResolvedReference({
-      ref: 'originalReleaseTrack',
-      data: input('data'),
-      find: input.value(find.track),
-    }),
-
-    exitWithoutDependency({
-      dependency: '#resolvedReference',
-      value: input('notFoundValue'),
-    }),
-
-    {
-      dependencies: ['#resolvedReference'],
-
-      compute: (continuation, {
-        ['#resolvedReference']: resolvedReference,
-      }) =>
-        continuation({
-          ['#originalRelease']: resolvedReference,
-        }),
-    },
-  ],
-});
diff --git a/src/data/composite/things/track/withOtherReleases.js b/src/data/composite/things/track/withOtherReleases.js
index f8c1c3f0..bb3e8983 100644
--- a/src/data/composite/things/track/withOtherReleases.js
+++ b/src/data/composite/things/track/withOtherReleases.js
@@ -1,8 +1,9 @@
-import {input, templateCompositeFrom} from '#composite';
+// Gets all releases of the current track *except* this track itself;
+// in other words, all other releases of the current track.
 
-import {exitWithoutDependency} from '#composite/control-flow';
+import {input, templateCompositeFrom} from '#composite';
 
-import withOriginalRelease from './withOriginalRelease.js';
+import withAllReleases from './withAllReleases.js';
 
 export default templateCompositeFrom({
   annotation: `withOtherReleases`,
@@ -10,31 +11,16 @@ export default templateCompositeFrom({
   outputs: ['#otherReleases'],
 
   steps: () => [
-    exitWithoutDependency({
-      dependency: 'trackData',
-      mode: input.value('empty'),
-    }),
-
-    withOriginalRelease({
-      selfIfOriginal: input.value(true),
-      notFoundValue: input.value([]),
-    }),
+    withAllReleases(),
 
     {
-      dependencies: [input.myself(), '#originalRelease', 'trackData'],
+      dependencies: [input.myself(), '#allReleases'],
       compute: (continuation, {
         [input.myself()]: thisTrack,
-        ['#originalRelease']: originalRelease,
-        trackData,
+        ['#allReleases']: allReleases,
       }) => continuation({
         ['#otherReleases']:
-          (originalRelease === thisTrack
-            ? []
-            : [originalRelease])
-            .concat(trackData.filter(track =>
-              track !== originalRelease &&
-              track !== thisTrack &&
-              track.originalReleaseTrack === originalRelease)),
+          allReleases.filter(track => track !== thisTrack),
       }),
     },
   ],
diff --git a/src/data/composite/things/track/withPropertyFromAlbum.js b/src/data/composite/things/track/withPropertyFromAlbum.js
index d41390fa..a203c2e7 100644
--- a/src/data/composite/things/track/withPropertyFromAlbum.js
+++ b/src/data/composite/things/track/withPropertyFromAlbum.js
@@ -2,17 +2,15 @@
 // property name prefixed with '#album.' (by default).
 
 import {input, templateCompositeFrom} from '#composite';
-import {is} from '#validators';
 
 import {withPropertyFromObject} from '#composite/data';
 
-import withAlbum from './withAlbum.js';
-
 export default templateCompositeFrom({
   annotation: `withPropertyFromAlbum`,
 
   inputs: {
     property: input.staticValue({type: 'string'}),
+    internal: input({type: 'boolean', defaultValue: false}),
   },
 
   outputs: ({
@@ -20,11 +18,21 @@ export default templateCompositeFrom({
   }) => ['#album.' + property],
 
   steps: () => [
-    withAlbum(),
+    // XXX: This is a ridiculous hack considering `defaultValue` above.
+    // If we were certain what was up, we'd just get around to fixing it LOL
+    {
+      dependencies: [input('internal')],
+      compute: (continuation, {
+        [input('internal')]: internal,
+      }) => continuation({
+        ['#internal']: internal ?? false,
+      }),
+    },
 
     withPropertyFromObject({
-      object: '#album',
+      object: 'album',
       property: input('property'),
+      internal: '#internal',
     }),
 
     {
diff --git a/src/data/composite/things/track/withPropertyFromOriginalRelease.js b/src/data/composite/things/track/withPropertyFromMainRelease.js
index fd37f6de..c6f65653 100644
--- a/src/data/composite/things/track/withPropertyFromOriginalRelease.js
+++ b/src/data/composite/things/track/withPropertyFromMainRelease.js
@@ -1,8 +1,8 @@
-// Provides a value inherited from the original release, if applicable, and a
-// flag indicating if this track is a rerelase or not.
+// Provides a value inherited from the main release, if applicable, and a
+// flag indicating if this track is a secondary release or not.
 //
-// Like withOriginalRelease, this will early exit (with notFoundValue) if the
-// original release is specified by reference and that reference doesn't
+// Like withMainRelease, this will early exit (with notFoundValue) if the
+// main release is specified by reference and that reference doesn't
 // resolve to anything.
 
 import {input, templateCompositeFrom} from '#composite';
@@ -10,10 +10,10 @@ import {input, templateCompositeFrom} from '#composite';
 import {withResultOfAvailabilityCheck} from '#composite/control-flow';
 import {withPropertyFromObject} from '#composite/data';
 
-import withOriginalRelease from './withOriginalRelease.js';
+import withMainReleaseTrack from './withMainReleaseTrack.js';
 
 export default templateCompositeFrom({
-  annotation: `inheritFromOriginalRelease`,
+  annotation: `withPropertyFromMainRelease`,
 
   inputs: {
     property: input({type: 'string'}),
@@ -26,18 +26,18 @@ export default templateCompositeFrom({
   outputs: ({
     [input.staticValue('property')]: property,
   }) =>
-    ['#isRerelease'].concat(
+    ['#isSecondaryRelease'].concat(
       (property
-        ? ['#original.' + property]
-        : ['#originalValue'])),
+        ? ['#mainRelease.' + property]
+        : ['#mainReleaseValue'])),
 
   steps: () => [
-    withOriginalRelease({
+    withMainReleaseTrack({
       notFoundValue: input('notFoundValue'),
     }),
 
     withResultOfAvailabilityCheck({
-      from: '#originalRelease',
+      from: '#mainReleaseTrack',
     }),
 
     {
@@ -54,14 +54,14 @@ export default templateCompositeFrom({
           ? continuation()
           : continuation.raiseOutput(
               Object.assign(
-                {'#isRerelease': false},
+                {'#isSecondaryRelease': false},
                 (property
-                  ? {['#original.' + property]: null}
-                  : {'#originalValue': null})))),
+                  ? {['#mainRelease.' + property]: null}
+                  : {'#mainReleaseValue': null})))),
     },
 
     withPropertyFromObject({
-      object: '#originalRelease',
+      object: '#mainReleaseTrack',
       property: input('property'),
     }),
 
@@ -77,10 +77,10 @@ export default templateCompositeFrom({
       }) =>
         continuation.raiseOutput(
           Object.assign(
-            {'#isRerelease': true},
+            {'#isSecondaryRelease': true},
             (property
-              ? {['#original.' + property]: value}
-              : {'#originalValue': value}))),
+              ? {['#mainRelease.' + property]: value}
+              : {'#mainReleaseValue': value}))),
     },
   ],
 });
diff --git a/src/data/composite/things/track/withSuffixDirectoryFromAlbum.js b/src/data/composite/things/track/withSuffixDirectoryFromAlbum.js
index 7159a3f4..30c777b6 100644
--- a/src/data/composite/things/track/withSuffixDirectoryFromAlbum.js
+++ b/src/data/composite/things/track/withSuffixDirectoryFromAlbum.js
@@ -1,8 +1,9 @@
 import {input, templateCompositeFrom} from '#composite';
 
 import {withResultOfAvailabilityCheck} from '#composite/control-flow';
+import {withPropertyFromObject} from '#composite/data';
 
-import withPropertyFromAlbum from './withPropertyFromAlbum.js';
+import withContainingTrackSection from './withContainingTrackSection.js';
 
 export default templateCompositeFrom({
   annotation: `withSuffixDirectoryFromAlbum`,
@@ -36,18 +37,13 @@ export default templateCompositeFrom({
           : continuation()),
     },
 
-    withPropertyFromAlbum({
+    withContainingTrackSection(),
+
+    withPropertyFromObject({
+      object: '#trackSection',
       property: input.value('suffixTrackDirectories'),
+    }).outputs({
+      '#trackSection.suffixTrackDirectories': '#suffixDirectoryFromAlbum',
     }),
-
-    {
-      dependencies: ['#album.suffixTrackDirectories'],
-      compute: (continuation, {
-        ['#album.suffixTrackDirectories']: suffixTrackDirectories,
-      }) => continuation({
-        ['#suffixDirectoryFromAlbum']:
-          suffixTrackDirectories,
-      }),
-    },
   ],
 });
diff --git a/src/data/composite/things/track/withTrackArtDate.js b/src/data/composite/things/track/withTrackArtDate.js
index e2c4d8bc..9b7b61c7 100644
--- a/src/data/composite/things/track/withTrackArtDate.js
+++ b/src/data/composite/things/track/withTrackArtDate.js
@@ -1,11 +1,3 @@
-// Gets the date of cover art release. This represents only the track's own
-// unique cover artwork, if any.
-//
-// If the 'fallback' option is false (the default), this will only output
-// the track's own coverArtDate or its album's trackArtDate. If 'fallback'
-// is set, and neither of these is available, it'll output the track's own
-// date instead.
-
 import {input, templateCompositeFrom} from '#composite';
 import {isDate} from '#validators';
 
@@ -24,11 +16,6 @@ export default templateCompositeFrom({
       defaultDependency: 'coverArtDate',
       acceptsNull: true,
     }),
-
-    fallback: input({
-      type: 'boolean',
-      defaultValue: false,
-    }),
   },
 
   outputs: ['#trackArtDate'],
@@ -57,20 +44,13 @@ export default templateCompositeFrom({
     }),
 
     {
-      dependencies: [
-        '#album.trackArtDate',
-        input('fallback'),
-      ],
-
+      dependencies: ['#album.trackArtDate'],
       compute: (continuation, {
         ['#album.trackArtDate']: albumTrackArtDate,
-        [input('fallback')]: fallback,
       }) =>
         (albumTrackArtDate
           ? continuation.raiseOutput({'#trackArtDate': albumTrackArtDate})
-       : fallback
-          ? continuation()
-          : continuation.raiseOutput({'#trackArtDate': null})),
+          : continuation()),
     },
 
     withDate().outputs({
diff --git a/src/data/composite/things/track/withTrackNumber.js b/src/data/composite/things/track/withTrackNumber.js
new file mode 100644
index 00000000..61428e8c
--- /dev/null
+++ b/src/data/composite/things/track/withTrackNumber.js
@@ -0,0 +1,50 @@
+import {input, templateCompositeFrom} from '#composite';
+
+import {raiseOutputWithoutDependency} from '#composite/control-flow';
+import {withIndexInList, withPropertiesFromObject} from '#composite/data';
+
+import withContainingTrackSection from './withContainingTrackSection.js';
+
+export default templateCompositeFrom({
+  annotation: `withTrackNumber`,
+
+  outputs: ['#trackNumber'],
+
+  steps: () => [
+    withContainingTrackSection(),
+
+    // Zero is the fallback, not one, but in most albums the first track
+    // (and its intended output by this composition) will be one.
+    raiseOutputWithoutDependency({
+      dependency: '#trackSection',
+      output: input.value({'#trackNumber': 0}),
+    }),
+
+    withPropertiesFromObject({
+      object: '#trackSection',
+      properties: input.value(['tracks', 'startCountingFrom']),
+    }),
+
+    withIndexInList({
+      list: '#trackSection.tracks',
+      item: input.myself(),
+    }),
+
+    raiseOutputWithoutDependency({
+      dependency: '#index',
+      output: input.value({'#trackNumber': 0}),
+    }),
+
+    {
+      dependencies: ['#trackSection.startCountingFrom', '#index'],
+      compute: (continuation, {
+        ['#trackSection.startCountingFrom']: startCountingFrom,
+        ['#index']: index,
+      }) => continuation({
+        ['#trackNumber']:
+          startCountingFrom +
+          index,
+      }),
+    },
+  ],
+});