Dual Resonant Solid State Tesla Coil. These things are pure awesomeness and one, can be over a million volts of lightning, and two, can be used to play music.
The Sorcerer's Apprentice is the only analogy I can give. Remember that scene when Dave takes Becky down into his lab and asks her to "get into his cage?" Remember the big lightning machines? Those are real DRSSTCs. They are a type of Tesla Coil, along with SGTC and SSTC. Well, the lightning in that was special effects for safety reasons, but the sound and device is real, invented by Nikola Tesla.