frank_from_hh;413199 Wrote: 
> What is the role of artist, album artist, track artist, whatever else
> artist in SC? When is the one shown and when is the other shown? Is
> there any up to date description of tags and their use in SC?
> 
They are largely an internal-representation, used by SC to bridge the
gap between scanning tags from files, and displaying hierarchies of
music in the music library.

Generally, you don't have to worry too much about contributor roles,
unless something goes wrong (eg. doesn't seem to be displayed where you
believe it should).

Contributor roles are "artists" who have involvement on songs in
various ways:

Artist contributor: the main performing artist(s) on the song.

Band/Orchestra contributor: the name of the band (or orchestra)
performing on a song.  People may use this in different ways. eg. for a
classical collection, it would hold the orchestra.  For a popular music
collection, it could hold the name of the backing band, eg Artist=Buddy
Holly and Band=The Crickets.  I use Band for aliases of the same artist
name - for example, I enter Artist=Robert Plant, Artist=Jimmy Page,
Band=Page & Plant.  Another example is Artist="A Silver Mt. Zion",
Band="Thee Silver Reveries and Tra-La band" (this band have performed
under various names - I can find the music either by the artist or the
band.

Album Artist contributor: when an album artist tag has been provided
that groups all songs on the album to belong to one main artist.  Any
artists that then perform on an album artist song are known as track
artists.

Track Artist contributor: this is a funny one, where the artist on a
song is actually labelled as a track artist instead of artist, when
there is an album artist contibutor role present.

Other contributor roles exist (conductor, composer, etc), and there may
be more added in the future (original artist, for example).

> Is there any up to date description of tags and their use in SC?
There is some info in the wiki, explaining what tags SC accepts, and
how the contributor roles are populated.  But I don't know if it is up
to date.  There haven't been many changes made to SC for scanning this
information into the DB in a long time.

> I have the impression that quite a lot automatism is going on depending
> on the tags (and SC surely does a great job). But shouldn't this be
> configurable?
> 
Generally, no.  Tags should have one identitied purpose, and it should
not be configurable how SC handles them.  The more it is configurable,
the more complicated it is for people to understand, and for support to
work out what a users problem is.

Most settings are to tell SC how to display information that it has
already scanned into its music library.

Some scanner logic is configurable, mainly to overcome issues with how
tags have been mis-used within other applications.

> In my limited and simple world, I have all my music stored as FLAC, each
> track is an individual file. I try to tag all these tracks using only
> standard tags (but standard does not seem to be unambiguously defined
> ;-) ). 
You are better off with FLAC, it's a better standard will less
ambiguity, so things will generally work better.

> I would like to be able to see these tags when I browse my music, or
> when a song is playing. And I surely do have my own idea on what a tag
> means (e.g. somewhere in the help SC tells me that the BAND tag is
> sometimes called ALBUMARTIST by other programs. Well, for me BAND would
> be PERFORMER and ALBUMARTIST is completly different).
> 
There are two clear steps:
1. Scan tags from files into the SC Music Library (database).
2. Display the content of the Music Library in the application (WebUI,
playerUI, etc).

SC will look for a known set of tags in various file/music tagging
formats.  These are not stored in the same way within SC; the structure
is different in order to be able to browse music efficiently.

Every contributor on a song (artist, band, orchestra, composer,
conductor, etc) gets stored in one distinct list of artists, and their
role on the song is also recorded.  So Robert Plant and Jimmy Page
could be artists performing on a song, "Page & Plant" could be the name
of the band, etc.

Depending on chosen Music Library settings and the way you want to
browse the library (by artist or by album, etc), these contributors
will either be included or excluded from the list.

So, if you tick "Band/Orchestra" in library settings, you would get
Bands in the Browse Artist list.

When there are guest performers on songs, an Album Artist tag can be
entered in the files to group all songs so the album appears only under
that given album artist (otherwise it would be a compilation album).  In
flac and other tag formats, the tag would be called "ALBUM ARTIST" (or
ALBUMARTIST).

mp3 is more awkward, in that other apps broke the id3v2.3 standard, and
mis-used the BAND tag (called the TPE2 frame), to hold the album artist.
So, there is an option to use BAND tag to represent Band contibutors,
or to use BAND tag to represent Album Artist contributors.

So, if you don't use mp3 files, you can ignore that option ;-)


-- 
Philip Meyer
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Philip Meyer's Profile: http://forums.slimdevices.com/member.php?userid=95
View this thread: http://forums.slimdevices.com/showthread.php?t=61689

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