Wow, omg, and holy mother of awesomeness.
I can probably -- without looking it up -- take a guess that Mochipet is a regular at Burning Man. I can't say I've heard a sound like this anywhere but at events like that.
Be sure to put your headphones on, because this one's going to take you for a ride.
Free download here.http://www.mochipet.com/free/