It's not my turn but it's stuck!
Please try the following steps:
- open the device settings
- open Game Center (it in the list on the left side, go down until you see music, it’s at the bottom of that group)
- sign out (tap on the Apple ID to bring up a bubble with sign out)
- sign back in
- launch the app
I’ve had multiple people try this and fix their issue. Please give it a shot and let me know how that works