I hope to be making a Zeusaphone sometime soon. This is a Tesla coil made to produce music. Here's my simple schematic:
[Tesla Coil]-----[Arduino FIO]----[MIDI Keyboard]
A Tesla coil makes noise by "flickering" on and off and making the air expand and contract rapidly. This creates sound waves. By modulating the frequency of the flickering, you can change the pitch of the sound. My Arduino chip will turn the coil on and off based upon the MIDI input.
Details as events warrant.