Overtone singing is a type of singing in which the singer manipulates the resonances (or formants) created as air travels from the lungs, past the vocal folds, and out of the lips to produce a melody.

This resonant tuning allows the singer to create apparently more than one pitch at the same time while in effect still generating a single fundamental frequency with his/her vocal folds.

It is believed the art of overtone singing has originated from south western Mongolia in today’s Khovd and Govi-Altai region.

Truly eerie to hear what the human voice is capable of producing.

Video via Ann-Marie Hefele.
Photo via Friday Night Linguistics.
Quoted text and photo via Wikipedia.