Hello gary from randolph,
Thank you for reaching back out to us regarding the issue you are having with the Apple Music app.
Here are a few resources that can assist you with troubleshooting:
How to force an app to close on your iPhone, iPad, or iPod touch
Update your iPhone, iPad, or iPod touch
If you are still having issues, I would suggest that you sign out of Apple Music and sign back in. This will require you to re-download any music you have already downloaded for offline use.
To sign out of the iTunes. Go to "Settings" > "iTunes & App Store" > touch the blue "Apple ID: your@email.address" > Touch "Sign Out"
Once that is completed you will be able to sign back in using your Apple ID.
If you are still having issues after reviewing the articles, please let me know. Also, can you confirm this is happening in your Library, and not the For You section of Apple Music?
Have a great day!