I think this conversation between myself and a friend of mine about this sums it up.
me: that song is only a seventeen second loop, but it sure doesn't sound like a boring-ass loop.
him: No, it doesn't.
him: I didn't realise it was a loop at first.
him: That's pretty impressive.
so, yeah... that's pretty much it. short and sweet, and easy to listen to incessantly. :)