You've heard the Harry Potter theme many times, performed many ways. But you've probably never heard a version quite like this one.

This version is being performed on the glass harp. It's not actually that expensive an instrument: the glass harp is simply wine glasses filled to different levels with water. The amount of water changes the resonance of the glass when a finger is rubbed around the rim, creating a crisp, generally high-pitched, musical note.

Yes, we know we could have saved a lot of time by saying it's what Sandra Bullock plays in 'Ms. Congeniality'. But the above makes us sound smart.

Anyway, the video is courtesy murayu74, a Japanese glass harp hobbyist who has more than two dozen songs recorded for your Youtube pleasure. Let us know your favorites in the comments!