Difference between revisions of "Release Group"

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(Added additional content from Release groups usage guideline and made changes to the wording.)
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* A 3 disc self-titled compilation by "[http://test.musicbrainz.org/release-group/7349c1f3-09fa-397f-848d-f976f315a746.html Nirvana]".
 
* A 3 disc self-titled compilation by "[http://test.musicbrainz.org/release-group/7349c1f3-09fa-397f-848d-f976f315a746.html Nirvana]".
 
* Mozart's 9 volume, 170 disc "[http://test.musicbrainz.org/release-group/3ea5428d-1d2b-35ee-bbb4-5fb7171a7269.html Wolfgang Amadeus Mozart: Complete Works]" box set, or Enya's 3 disc box set "[http://test.musicbrainz.org/release-group/27a611a6-30d6-304a-9926-6b1eaa893499.html A Box of Dreams]".
 
* Mozart's 9 volume, 170 disc "[http://test.musicbrainz.org/release-group/3ea5428d-1d2b-35ee-bbb4-5fb7171a7269.html Wolfgang Amadeus Mozart: Complete Works]" box set, or Enya's 3 disc box set "[http://test.musicbrainz.org/release-group/27a611a6-30d6-304a-9926-6b1eaa893499.html A Box of Dreams]".
* Blind Guardian's "[http://test.musicbrainz.org/release-group/3a5d9bb8-8e19-379d-b294-ee8fcf743f77.html Nightfall in Middle-Earth]" was first released in 1998 and then in 2007, the musical "[http://test.musicbrainz.org/release-group/afdd011e-e2aa-39f3-b52b-1ffe001d8d87.html My Fair Lady]" (Original London Cast) released on vinyl in 1959 and CD in 1998.
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* Blind Guardian's "[http://test.musicbrainz.org/release-group/3a5d9bb8-8e19-379d-b294-ee8fcf743f77.html Nightfall in Middle-Earth]" was first released in 1998 and then remastered with a bonus track in 2007, the musical "[http://test.musicbrainz.org/release-group/afdd011e-e2aa-39f3-b52b-1ffe001d8d87.html My Fair Lady]" (Original London Cast) was originally released on vinyl in 1959 and on CD in 1998.
  
 
== When Not to Group Releases together ==
 
== When Not to Group Releases together ==

Revision as of 16:51, 24 May 2009

Template:DocumentationHeader

Status: This is proposed style for an unreleased feature. It is not yet official.

Definition

A Release Group is a MusicBrainz concept introduced in May 2009 used to group several different releases into a single logical entity. Every release belongs to one, and only one release group.

Both release groups and releases are "albums" in a general sense, but with a slight difference: a release is something you can buy as media, e.g. a CD, a vinyl record etc. on its own, while a release group embraces the concept of an album -- it doesn't matter how many CDs or editions/versions it had. When an artist tells you "We've released our new album", they're talking about a release group. When his publisher says "This new album gets released next week in Japan and next month in Europe", they're talking about the different releases that belong in the release group that the artist told you about.

MusicBrainz automatically considers every release in the database to be part of a release group, even if this group only contains the one release. As an editor you don't have to worry about creating release groups, you will only need to merge existing ones.

There are a number of situations in which merging releases groups is appropriate.

Regular releases
Since every release is inside a release group, some release groups have only a single release.
International release variations
Releases are often released with different tracklists in different markets, some may even have additional bonus discs. Due to WhatDefinesAUniqueRelease these would be separate releases at MusicBrainz, but should be merged together into the same release group.
Deluxe/limited editions and reissues/remasters
Just like above, a "special" edition of an album, a reissue of an album, or a remaster, should all be part of the same release group.
Multi-disc releases
Each disc in a multi-disc release at MusicBrainz is a separate release (named according to disc number style), but all discs should be part of the same release group.
Box sets
A special case of the above; each disc in a box set would normally be part of the same release group.
Transliterations & translations
Transliterated or translated pseudo-releases should be part of the same release group as the official release (but see below for alternate language versions).

Examples

When Not to Group Releases together

There are a number of cases where it is not appropriate for releases to be part of the same group:

  • Different bootleg recordings of a live show, e.g. bootleg 1 and bootleg 2 of a 1970 Pink Floyd concert in San Francisco.
  • If the individual discs of a re-released Box Set have not been duplicated, due to the rules outlined at "What Defines A Unique Release", each disc in that set should not be grouped together as per the normal box set rules noted above.

Use of Attributes

Title

The title of a release group should be the title of its individual releases, removing Extra Title Information added due to Disc Number Style, Volume Number Style etc.

Type

The types of a release group are the same as those possible for Release Type and should normally be the same as all of the releases in that group. This may not always be the case. It is OK for a bonus disc EP, remix, live disc etc to be inside the same "Album" release group as the accompanying album disc.