After upgrading to Photoshop 2026 several downloaded iTunes songs wouldn't play ...

on either my desktop computer or iPhone. Titles were listed on the computer but they wouldn't play. They didn't show at all on the iPhone.

I found the fix (I hope): reauthorize the computer for iTunes and then sync the phone. The songs reappeared on both devices.

It might have been the Photoshop upgrade. I found known issues. Or it could have been something else.

Posting should it help others.