Hello meban48,
Thanks for using the Apple Support Communities. We understand that you're experiencing an issue with your Apple Watch not providing you with music controls as expected. It appears that your watch is running the latest watchOS, have you also updated your iPhone to iOS 14.5?
There are a couple actions you can perform that may help sort this out.
- Restart your iPhone and Apple Watch
Restart your iPhone
How to restart your Apple Watch
- Unpair and re-pair your Apple Watch and iPhone
Unpair and erase your Apple Watch
Let us know if the suggestions above correct the issue. If you need additional help, just let us know and we'll be happy to continue researching a possible solution.
Best regards.