Giant Tesla Coils can do some neat stuff with huge zaps of power. For instance, here's the band ArcAttack performing the Legend of Zelda theme mashed up with "SexyBack":
So...how does that work? In this 15-minute video, Norm from Tested gets technical with ArcAttack on exactly how their coils are built, how they make music with them, and how much juice is involved. If you have even the slightest interest in building giant Tesla Coils, prepare to get nerdy.
My favorite line: "They're loud, and they kind of sound like heavily distorted trumpets...which is a very odd instrument to have to write music for."