Proper Multi-Artists support for FLAC

[mist2t]

It seems that MA supports by default the non-standard, MusicBrainz way, of dealing with multiple-artists in FLAC files by using the "Artists" (plural wording) field with delimiters (;)

As per my research and also the official documentation on Vorbis comments (Flac tags) the consensus is that multiple "Artist" (singular wording) fields should be used for all the artists present on a track.

Example

Artist = Artist 1
Artist = Artist 2
Artist = Artist 3

The official Vorbis Comments documentation / recommendations suggests the same
https://xiph.org/vorbis/doc/v-comment.html

Other music servers I tried supports properly the official way of tagging multiple artist for FLAC (multiple "artist" fields).
Example from Jellyfin config screen below
(you can select the non-standard "artists" tags with delimiter but by default the standard way is supported)

I think multiple scenarios should be supported, beside the standard (this should be the default one)

1. Standard (Multiple "Artist" fields, one for each artist)
2. MusicBrainz way (Single "Artists" field with delimiters)

• optional

3. The old hacky way (All the artists in the single / main "Artist" field with delimiters (,) or (;) or delimiter words such as (feat) (and) etc. )

I have tagged all my library using the standard (multiple "artist" fields) and it works perfectly fine on various music server I tried (Navidrome, Jellyfin etc.)

Another example .... using MP3Tag software (one of the most popular out there), they support the standard tagging for FLAC under the hood, it's their default for FLAC files.

Music Assistant has some quirks regarding multiple-artists (related or not to proper Flac tags support) :

• Sometimes it displays only the first one (Album artist + another one ... even if multiple are present in tags)
• On some tracks it skips the Album artist all together and displaying only the featured ones (and only 2)
• On some tracks it doesn't respect the logical order of display (Album artist + Additional Artists) by inversing order (Additional Artist + Album Artist)
• etc.

Thanks for all the work guys !

[mist2t]

I think this might be related to some display bugs.

I think MA supports already the multi-value "Artist" (single wording) tag (aka multiple "artist" tags) it's just a bug on display for this particular use case scenario. Needs some devs confirmation though :)

In Albums page the artists are trimmed (showing only 2) but in now playing screen all of them are shown.
The artist order are still messed up though.

[OzGav]

Full support for FLAC / OGG tags will be in the next beta. This includes support for multiple ARTIST tags.