I saw this incredible show last night

They are called Alash ensemble, and they are from Tuva -- which is just north of Mongolia. Their culture over the centuries has developed a folk-singing tradition called throat singing, in which they can create multiple tones with their voice. One voice, multiple tones--I know, it doesn't add up. It is crazy! They best way i can describe it is a human bagpipe, because there is a sustained drone in the back of their throat, and then they manipulate the air with their mouth to create high-pitched notes. And then, to top it off, they create different rhythms--it is poly-phonic and poly-rhythmic with one voice box.