Thanks for getting back to us and letting us know what's happening ilutz69.
We'd like to have you try restarting your Mac in safe mode. When restarting in safe mode it's expected that your Mac will boot up slower. Safe mode is doing sort of a checks and balances while starting up, something similar to First Aid. Once you are at your desktop, see if you can open the Music app. If Music opens without any issues, then restart your Mac to get it back to normal mode, and test Music again.
If you still need help, reach back out and let us know what happened in safe mode.
Take care!