No surprise here.<p>Look, for example, at this clip of traditional Siberian music.<p><a href="https://www.youtube.com/watch?v=SU1apJTv94o" rel="nofollow">https://www.youtube.com/watch?v=SU1apJTv94o</a><p>or this one<p><a href="https://www.youtube.com/watch?v=tXLoP9iSU5Y" rel="nofollow">https://www.youtube.com/watch?v=tXLoP9iSU5Y</a><p>The similarity to North American Indian cultures is still striking, 13 thousand years later.<p>(And I like the way the singer just overflows with musical energy, too...)