You are listening to the voice of Kaigal-ool performing Borbanngadyr. Kaigal-ool is a member of Huun-Huur-Tu, a Tuvan group that performs traditional folk songs and various styles of Tuvan throat singing. Their CDs can be ordered through the Tuva Trader.
Everything you hear is produced by a single human voice with no over-dubbing. Kaigal-ool is singing three different pitchs at the same time in this song.