Anna-Maria Hefele

Anna-Maria Hefele is a German overtone singer.

Canadian Inuit and several forms displayed in Mongolia and surrounding regions are the most recognized.

Hefele's style is culturally practiced in the Siberian region of Tuva.

[3] The Huffington Post has commented on her "amazing ability" and her singing being "utterly bizarre".

[4] On 10 October 2014, she was number two on The Guardian's Viral Video Chart,[5] with one online video titled Polyphonic Overtone Singing, which features Hefele as she demonstrates and explains overtones.