missing music from iTunes Library
I just noticed that all the songs of two artists that I bought from iTunes are missing from my Library. They are still available on the iTunes Store... For one artist, the songs are marked "Purchased" but not available; for the other artist, the songs are not marked "Purchased." I searched for them on my Time Machine backup hard drive, and they have disappeared there as well.
MacBook Pro 13″, macOS 10.13