ok, I already mentioned Carlos Mena (4 “appearances” missing) and Christa Ludwig.(soemwhere between 15 and 20 appearances missing)
Third example Andras Schiff. I have 23 piano recitals / recordings with him as “Main Artist”. They are all there. Then I have a good handful of “appearances” in chamber music settings. They have all disappeared.
I dont intend to provide a report on each and any of my 2500+ artists. There’s just something fundamentally wrong here. Should be easily spotable
Thanks
NB: Should habe mentioned: Using Qubuz. But some of those „appearances“ may well not be on the streaming service but just in my library.