In Android app > Music > Classification > Genre, Artist, Composer the entries are not separated.
Genre; Tagged as multiple genres are listed as Genre1;Genre2;Genre3…
Artists; Tagged with multiple artists are listed as Artist1;Artist2;Artist3…
Composer; Tagged with multiple composers are listed as Composer1;Composer2…
The 5.7.x Version & DB can not understand separator function (for example with ; semicolon) but this is important for filtering, search, finding and listing according to the tags.