Can't sign in with my Apple ID on Catalina Music app

I got solution 2 to work, with a bit of adjustment, thank goodness, Apple have made a right mess of this process!

Just tried out the 2nd option and it worked a treat.

Thank you soon much.

Have a top day.

Cheers

Do I have to reinstall Catalina to do this with my current user? Or is there some way to do this without reinstalling?

Thanks, Your solution is the best!! this can fix my music app. And now, I can sign in my music app.

Thank you! I've used #2. Finally I have access to things I paid for 😄

Solution #2 works! Finally, I can listen to my Apple Music!

This worked for me as well. I did another fresh install of 10.15.1, this time skipping the sign in with iCloud during setup, and I was able to successfully login to the Music and TV apps.

Not sure if it's relevant, but when I did successfully sign in to the Music app it came up with a notice that it had to switch stores to Canada, so it looks like for whatever reason it was set to a different region by default even though my system is set to Canada.

Same here, (unknown error (11556) code, spoke with tech support they are aware but he advised I just have to wait for it to become visible on apples radar before a fix too be pushed. Music, Podcast, TV. Apples old saying it just works doesn't appear to be a great slogan anymore.

No issue though on MacBook, iPad or iPhone just my Mac, very frustrating.