Store the release group's title.

beets does not currently store the "canonical" release group title,
only each release's title and disambiguation. Oddly, beets does store
the release group disambiguation.

Without this there is no way to determine a release group's title
without separately querying a data source.

beets/autotag/hooks.py

@@ -84,6 +84,7 @@ class AlbumInfo(AttrDict):
             mediums: Optional[int] = None,
             artist_sort: Optional[str] = None,
             releasegroup_id: Optional[str] = None,
+            release_group_title: Optional[str] = None,
             catalognum: Optional[str] = None,
             script: Optional[str] = None,
             language: Optional[str] = None,
@@ -120,6 +121,7 @@ class AlbumInfo(AttrDict):
         self.mediums = mediums
         self.artist_sort = artist_sort
         self.releasegroup_id = releasegroup_id
+        self.release_group_title = release_group_title
         self.catalognum = catalognum
         self.script = script
         self.language = language

beets/autotag/mb.py

@@ -445,6 +445,9 @@ def album_info(release: Dict) -> beets.autotag.hooks.AlbumInfo:
     info.releasegroup_id = release['release-group']['id']
     info.albumstatus = release.get('status')
 
+    if release['release-group'].get('title'):
+        info.release_group_title = release['release-group'].get('title')
+
     # Get the disambiguation strings at the release and release group level.
     if release['release-group'].get('disambiguation'):
         info.releasegroupdisambig = \

beets/library.py

@@ -526,6 +526,7 @@ class Item(LibModel):
         'acoustid_fingerprint': types.STRING,
         'acoustid_id': types.STRING,
         'mb_releasegroupid': types.STRING,
+        'release_group_title': types.STRING,
         'asin': types.STRING,
         'isrc': types.STRING,
         'catalognum': types.STRING,
@@ -1086,6 +1087,7 @@ class Album(LibModel):
         'albumtypes': types.SEMICOLON_SPACE_DSV,
         'label': types.STRING,
         'mb_releasegroupid': types.STRING,
+        'release_group_title': types.STRING,
         'asin': types.STRING,
         'catalognum': types.STRING,
         'script': types.STRING,

docs/changelog.rst

@@ -88,6 +88,8 @@ New features:
 * :doc:`/plugins/convert`: Add support for generating m3u8 playlists together
   with converted media files.
   :bug:`4373`
+* Fetch the ``release_group_title`` field from MusicBrainz.
+  :bug: `4809`
 
 Bug fixes: