The Bulgarian Voices Angelite, Moscow Art Trio & Huun-Huur-Tu - Wave
The Bulgarian Voices Angelite is a remarkable group, and this collaboration with Tuvan folk group "Huun-Huur-Tu" is nothing short of amazing.
It's impressive that music with such traditional roots can be so avant-garde, sounding more contemporary than most music being made today.
For more songs like this I highly recommend the album "Fly, Fly My Sadness".
Cool sidenote: Another Bulgarian singing group of the same genre called "Trio Bulgarka" appeared on the Kate Bush albums "The Sensual World" (1989) & "The Red Shoes" (1993).