Apple Music on Mac misbehaving

Using MacBook Pro M4. Siri will not play songs from my Apple Music library (says it can't find the song, or album), also will not create stations from songs. I've tried restarting the Mac, re-opening the app, deauthorizing and reauthorizing the Mac. My impression is that this seems to have started with the OS15.3.1 update, but could have started earlier. Stations can be created and played just fine on my iPad.