CANTO POLIFONICO ARMONICO

VER TÉCNICA: 

TRAN QUANG HAI - Sings with the biggest number of overtones (Canta con la mayor cantidad de matices): https://www.youtube.com/watch?v=zQE8LVqogAA 

TRAN QUANG HAI - Shows the undertone (Muestra el canto de fondo):

https://www.youtube.com/watch?v=kxBInulvyqk