Amazing, but really weird.
Now we know what you're thinking. The only thing in our lives that was/is polyphonic is a ringtone on a Nokia, but it turns out that polyphonic singing is a rare and bizarre talent that some people have. Meet Anna-Maria Hefele, a polyphonic overtone singer who is one such person. Now it starts off slow, but just wait until she gets going. It's like she is a musical instrument and it's stunning to watch and hear but man is it strange.