The Medeo Ensemble were a jazz-fusion band out of Almaty, Kazakhstan (then a part of the USSR). As far as I can tell, this is the only album they ever released, but it holds up nicely.
Soviet Jazz
[Music] Rishad Shafi & Gunesh – Baikonur
https://www.youtube.com/watch?v=oYxcayywWX8
Rishad Shafi was a drummer and percussionist from Turkmenistan who headed the best prog band out of Central Asia in the 1980s, Gunesh.
[Music] Boomerang – Mirage (Kazakhstan/USSR, 1986)
Another Soviet ethno-jazz project of high quality. Boomerang hailed from Kazakhstan, and this particular album is considered their rarest.
[Video] Ganelin, Chekasin, Tarasov – Semplice (II)
I really owe all of my passion for Eastern European/Soviet Improvisational and Experimental music to one man: Leo Feigin of Leo Records. It was through his introduction, via his catalog and a few letters back and forth, that I was introduced to such artists as Vyacheslav Ganelin (the Ganelin Trio’s leader, now based in Israel), Sergei Belichenko and Roman Stolyar, a friend to this day.
Here is the Ganelin Trio near the peak of their improvisational powers. Vladimir Tarasov and Vladimir Chekasin join in.
A Miscellany Of Tasteful Music 