[mhdebokx]

I have been testing around.
There is no difference between ID3v2.3 and ID3v2.4 tags (with the correct seperator in the Advanced settings and the Picard config).

Set the Kodi Music setting "Download additional info during updates" OFF. So first scan your complete music collection, and the Kodi music database is filled with the info from the ID3 tags.

Set the Kodi Music setting "Override song tags with online information" ON. Browse to the music Library, go to the Artists view, select context menu, and then do the action "Query info" for all artists. Do the same action for Abums: "Query info for all albums" .

In both cases use the Universal scraper. Now all MBID's are available and the database song titles, album titles and artist information is updates from the MusicBrainz database.

When playing the music, and show the full music window, the artist information is almost correct. Now first is the Albumartist shown and then the Artist tag. This is also valid info for the Artist Slideshow addon, because the first element (the Albumartist) is seperated by a dash "/".

See the result I'm happy now