Huun-Huur-Tu (Tuvan: ??? ????? Khün Khürtü) is a music group from Tuva, a Russian republic situated on the Mongolian border. One of the distinctive elements of their music is throat singing, in which singers sing both the note and the note's overtone, thus controlling two tunes simultaneously. The overtone often sounds like a flute, but it is a human's voice.