Wow, that's sad. At least in the case of Mirage, Маргарита Суханкина got some recognition in later years for actually having provided the vocals all along...

(Laskovy May was my first introduction to the fact that the 80s were the 80s, no matter which side of the iron curtain one was on. eg https://youtu.be/tleOxzH6R08?t=180 )

Unfortunate. I wish that stories of the exploitation of musicians were uncommon, but they aren't.

By the way, the headline misspells "shocking".

...this is beknown to the elder russian fellows. RIP in peace, Yuri! I hope you can sing your songs up there, too. luv ya-