SOLVED: Music is a mess. Please help.

[nothingveryobvious]

Do you let musicbrainz whipe the tags first?

because my guess (and that was right so many times already when I asked the same question in reddit to users with issues in their music library) is that the extended tags of your files have wrong metadata in them.

What I do to make sure it's correct is to set musicbrainz to whipe all metadata first, and then tag it.

This ensures that there is no wrong data and everything is in order. With this approach I have not had issues so far with a rather large library of also many obscure artists and songs.

I just tried what you suggested and it didn't help. Thanks anyway.