This is Tuvan Throat Singing and music at it’s finest:

Alash Ensemble Live in Chicago for 10th Anniversary Concert at Old Town School of Folk Music. (YouTube, 1 hour 20 min) “A live recording of Alash Ensemble’s 10th anniversary, Chicago concert hosted by The Old Town School of Folk Music in The Myron R. Szold Music & Dance Hall on February 20, 2016”

“The members of Alash are Tuvan throat singers, who use a remarkable technique for singing multiple pitches at the same time. Masters of traditional Tuvan instruments as well as the art of throat singing, they are deeply committed to traditional Tuvan music and culture. At the same time, they are fans of western music. Believing that traditional music must constantly evolve, Alash subtly infuse their songs with western elements, creating their own unique style that is fresh and new, yet true to their Tuvan musical heritage.”

Two of their albums are also available on YouTube: Achai and Buura. (Link to the first of 13 songs in each playlist.)

Huun-Huur-Tu at Fantasy Studios, Berkeley, California November 18, 2008. (YouTube, 1 hour 18 min) Their website doesn’t seem to exist any more, but you can read about them on Wikipedia: Huun-Huur-Tu.