I can not find my purchased music!

Hello.
Before start APPLE MUSIC service appeared, I bought music by ITUNES STORE. Gathered a decent collection.
After starting APPLE MUSIC, I signed up and started listening to music from there.
Recently, I became interested in DJing and I needed my paid music.
But I can’t find her! For example, on ITUNES STORE, I see that the VIOLATOR DEPECHE MODE album is “purchased”, but I do not have it in the “purchases” section.
I have not watched YELLO and other bands yet, but most of my paid music has disappeared!
I ask you to help bring it back to me!
Regards, Boris