I have an mp4 (m4a) music file. Picard will tag the Artist field to be multiple value (several artists), each separated by semi-colons – when you edit the tag in Picard, each artist appears on separate lines, so the semi-colon is indicating a separate Artist tag. In mp3tag, that music file is confirmed to have multiple artist tag values.
In musicbee, the artist tag for that music file appears blank (null).
Has anyone encountered this? I can manually “solve” the problem by editing the Artist field in Picard to eliminate the artists on separate lines, and put all the artists on one line, also separated by a semi-colon (then it appears in MusicBee as multiple artist tags), but I was hoping for a way not to have to do that.
Perhaps I should ask this in a separate post, but as an interim solution, is there a script I can run that would convert a field like Artist that has multiple values (artists), each separated by semi-colons and producing multiple identical Artist tags, to a field that is one line (produces one tag), with each item separated by a semi-colon? The latter alone is what MusicBee seems to treat as a multiple value tag, at least for mp4 (m4a) files. (The MusicBee way has the advantage of showing all values of the multi-tag in Apple iTunes. The Picard way does not; it shows only the first value or artist.) Thank you.
p.s. This may (or may not) be relevant – it appears mp3tag made special changes to read Picard’s multi-value tags (in mp4 files):
There is also this ticket: