This technique of singing polyphonic overtones is also known as “throat singing,” and Hefele has been practicing it since 2005.
There are several styles of overtone singing found around the world. Canadian Inuit and several forms displayed in Mongolia and surrounding regions are the most recognized. Hefele’s style is culturally practiced in the small region of Tuva. This whistling vocal version is called sygyt.
- “Obertonsängerin Anna-Maria Hefele Eine Stimme wie nicht von dieser Welt”. Br.de. Retrieved 12 October 2014.
- Fitzharris, Mia. “Throat Singer’s Performance Goes Viral”. Yahoo News. Retrieved 12 October 2014.
- Christopher Hooton (6 October 2014). This woman singing multiple notes at once is a total ‘I didn’t even know humans could do that’ moment. The Independent. Accessed October 2014.
- “German Musician Anna-Maria Hefele Demonstrates Polyphonic Overtone Singing, And It’s Amazing”. Huffington Post. Retrieved 12 October 2014.
- Perraudin, Frances (10 October 2014). “Viral Video Chart”. The Guardian. Retrieved 12 October 2014.
Polyphonic Overtone Singing-Anna-Maria Hefele: