Finally, it got me to dig up a photo of some old tapes, which I long ago boxed up in my dad's basement. In the 70s and early 80s, #Soviet rock bands like #Akvarium were obviously not allowed to tour and release records like they would have in the west, but cassettes would spread (https://en.m.wikipedia.org/wiki/Aquarium_(band)). And as late as in 1995, you could go into a record store and in between all the new records buy old tapes like these (Akvarium on top, Alexander Bashlachev below).