User:Kuno/Track grouping: Difference between revisions
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=Track Grouping= |
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The following is a summary of my thoughts about track grouping discussed on irc today: |
The following is a summary of my thoughts about track grouping discussed on irc today: |
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proposal below, but I will link to it for completeness: http://chatlogs.musicbrainz.org/musicbrainz/2012/2012-01/2012-01-13.html#T17-24-48-162101 |
proposal below, but I will link to it for completeness: http://chatlogs.musicbrainz.org/musicbrainz/2012/2012-01/2012-01-13.html#T17-24-48-162101 |
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==Rationale== |
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Tracks are grouped for various reasons in the real world, this proposal attempts to provide a general purpose solution for all such groupings. |
Tracks are grouped for various reasons in the real world, this proposal attempts to provide a general purpose solution for all such groupings. |
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Some obvious groupings are the sides of a medium, or a group of tracks which together have been given a title and may form a work. |
Some obvious groupings are the sides of a medium, or a group of tracks which together have been given a title and may form a work. |
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==Examples== |
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===Music for the Jilted Generation=== |
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Let's start with a simple example: http://www.discogs.com/viewimages?release=6526 |
Let's start with a simple example: http://www.discogs.com/viewimages?release=6526 |
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The final three tracks are grouped together and given a title, "The Narcotic Suite". All CD versions of this release have the final three tracks split up, it is merely a title given to a group of tracks/recordings. |
The final three tracks are grouped together and given a title, "The Narcotic Suite". All CD versions of this release have the final three tracks split up, it is merely a title given to a group of tracks/recordings. |
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===MCMXC a.D=== |
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If you look at the backcover of Enigma's "MCMXCD a.D." you would probably think track II is called "Principles of Lust", and the track has three parts. In practice it turns out there are versions of the CD where the track is split up in three parts, and versions where it is not. http://www.discogs.com/viewimages?release=35912 |
If you look at the backcover of Enigma's "MCMXCD a.D." you would probably think track II is called "Principles of Lust", and the track has three parts. In practice it turns out there are versions of the CD where the track is split up in three parts, and versions where it is not. http://www.discogs.com/viewimages?release=35912 |
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We have both kinds of editions of this release in the database, some have the tracks split up, and some don't. One of the cricicsms often levelled at musicbrainz is that musicbrainz is too focused on tagging mp3 files. There should not be a 1:1 mapping of recording entities to audio files. We should be able to split up the recordings for all these editions into the seperate parts, and then merge the duplicates, so we do not have duplicate entries in the database for these recordings. |
We have both kinds of editions of this release in the database, some have the tracks split up, and some don't. One of the cricicsms often levelled at musicbrainz is that musicbrainz is too focused on tagging mp3 files. There should not be a 1:1 mapping of recording entities to audio files. We should be able to split up the recordings for all these editions into the seperate parts, and then merge the duplicates, so we do not have duplicate entries in the database for these recordings. |
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===Der Ring Des Nibelungen=== |
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The ring is a good example of nested groups of works. It is a collection of four opera's, intended to be performed in sequence on four sperate days. Each opera has several acts, and each act has several scenes. It is typically released on CD using two discs for the first opera, and three for the subsequent opera's. |
The ring is a good example of nested groups of works. It is a collection of four opera's, intended to be performed in sequence on four sperate days. Each opera has several acts, and each act has several scenes. It is typically released on CD using two discs for the first opera, and three for the subsequent opera's. |
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Note that in this particular version, http://www.discogs.com/release/1002838 , scene 3 starts on the first disc and ends on the second disc. A group of tracks therefore has to support starting and ending at arbitrary points on different mediums. |
Note that in this particular version, http://www.discogs.com/release/1002838 , scene 3 starts on the first disc and ends on the second disc. A group of tracks therefore has to support starting and ending at arbitrary points on different mediums. |
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===Nevermind=== |
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Nirvana's nevermind ( http://musicbrainz.org/release/b52a8f31-b5ab-34e9-92f4-f5b7110220f0 ) is one of the canonical examples of a CD with a "hidden" track. The final song on the CD is followed by a certain amount of silence, and then followed by another song -- all within a single track. Because of the 1:1 mapping of recording -> audio file, we have recording entries in the database |
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for these [song / silence / hidden song] tracks which really should be split up in three separate recordings. |
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I suggest we solve this by having a seperate track group take the place of the CD track -- it signifies that a particular sequence of recordings are typically stored in a single audio file. If the medium has a CDTOC, a track grouping can take the place of a proper track for the purposes of enforcing a duration. |
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==Implementation== |
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Revision as of 18:31, 13 January 2012
Track Grouping
The following is a summary of my thoughts about track grouping discussed on irc today:
http://chatlogs.musicbrainz.org/musicbrainz/2012/2012-01/2012-01-13.html#T15-32-10-479712
hawke_1 offers an interesting alternative idea, which I will not further consider in the proposal below, but I will link to it for completeness: http://chatlogs.musicbrainz.org/musicbrainz/2012/2012-01/2012-01-13.html#T17-24-48-162101
Rationale
Tracks are grouped for various reasons in the real world, this proposal attempts to provide a general purpose solution for all such groupings.
Some obvious groupings are the sides of a medium, or a group of tracks which together have been given a title and may form a work.
Examples
Music for the Jilted Generation
Let's start with a simple example: http://www.discogs.com/viewimages?release=6526
The final three tracks are grouped together and given a title, "The Narcotic Suite". All CD versions of this release have the final three tracks split up, it is merely a title given to a group of tracks/recordings.
MCMXC a.D
If you look at the backcover of Enigma's "MCMXCD a.D." you would probably think track II is called "Principles of Lust", and the track has three parts. In practice it turns out there are versions of the CD where the track is split up in three parts, and versions where it is not. http://www.discogs.com/viewimages?release=35912
We have both kinds of editions of this release in the database, some have the tracks split up, and some don't. One of the cricicsms often levelled at musicbrainz is that musicbrainz is too focused on tagging mp3 files. There should not be a 1:1 mapping of recording entities to audio files. We should be able to split up the recordings for all these editions into the seperate parts, and then merge the duplicates, so we do not have duplicate entries in the database for these recordings.
Der Ring Des Nibelungen
The ring is a good example of nested groups of works. It is a collection of four opera's, intended to be performed in sequence on four sperate days. Each opera has several acts, and each act has several scenes. It is typically released on CD using two discs for the first opera, and three for the subsequent opera's.
Note that in this particular version, http://www.discogs.com/release/1002838 , scene 3 starts on the first disc and ends on the second disc. A group of tracks therefore has to support starting and ending at arbitrary points on different mediums.
Nevermind
Nirvana's nevermind ( http://musicbrainz.org/release/b52a8f31-b5ab-34e9-92f4-f5b7110220f0 ) is one of the canonical examples of a CD with a "hidden" track. The final song on the CD is followed by a certain amount of silence, and then followed by another song -- all within a single track. Because of the 1:1 mapping of recording -> audio file, we have recording entries in the database for these [song / silence / hidden song] tracks which really should be split up in three separate recordings.
I suggest we solve this by having a seperate track group take the place of the CD track -- it signifies that a particular sequence of recordings are typically stored in a single audio file. If the medium has a CDTOC, a track grouping can take the place of a proper track for the purposes of enforcing a duration.
