Artist or Artists for multiple Artists

[Alandbush]

(08-07-2019 15:34)sadsack5000 Wrote:  I have ran all my mp3's through musicbrainz picard and they are tagged to the id3v2.4 standard. Musicbrainz has utilised a new tag ARTISTS with semicolon separator's to list the main artist and featured artist in any relevant track. See attachment under column Original Values.
In this case Florence Welch does not appear in All Artists of MS, nor does John Martin in the track a few previous.

I think I may have found a discrepancy in your original post.

I have been messing around with Musicbrainz Picard (always interested in different software) and your attached image suggests that it was set to id3v2.3 standard. I deduce that from the Artists tag replacement value containing a backward slash (/) separator instead of the original semi colon. Of course, this could be an old image and if so I apologise for my assumption.

If, however, the Artists tag value, in your example, is indeed ‘Calvin Harris/Florence Welch’ then Minimserver does not recognise the separator.
If you follow simoncn suggestion, the above should appear in the Artists index as Calvin Harris/Florence Welch.