Who doesn't love the sound of a theremin?
Wait, did someone say, "What's a Theremin?" Well, first you can go to the repository of all human knowledge, Wikipedia...and read this article. Then you can watch this video of someone actually playing a theremin:
And now that you're familiar with what a real theremin sounds like, you can waste all kinds of time playing this virtual online theremin. (No, you don't get to wave your hands in the air, but you can make some pretty interesting sounds!) You may thank me later...
(adj.) wild and frenzied; from Greek κορυβαντες (Korybantes)