Musical Tesla Coil (also known as “Singing Tesla Coil”), sometimes called a zeusaphone, thoramin or musical lightning, is a form of plasma speaker. The music Tesla coil, It is a variety of a solid state Tesla coil that has been modified to produce musical tones by modulating its spark output. The resulting pitch is a low fidelity square wave like sound reminiscent of an analog synthesizer. *Do not use the coil in a flammable environment.*.