"Where did all my music go?: Hello. Running a an M1 Mac Mini, and I just upgraded to OS 15.7. I open the Music app, all my music appears, but when I click on a title, I get a screen that says the music isn't wnere it's supposed to be. Where did all my music go?"
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Missing Music:
A. Provide a Screenshot:
Please reply back with a screenshot of this error message your speak of. IMPORTANT: Be certain to blockout personal information (i.e. names and dates), but covering it with red-color rectangles and such, through use of the Photos app. Go Here: Take a Screenshot on iPhone - Apple Support
Also,...
Once fixed,..
B. Update your Mac:
Perhaps there was fix for this in the most recent update. So, update your Mac: Go to: Apple menu > About this Mac... > Check for Updates...
Important:
Prior to Updating, Back up your Mac:
Create a Time Machine backup of your Mac, so that you can have something to restore your Mac from, should anything go wrong with the update.