Tesla coil are perfect for stepping up high frequency alternating current. When you add music you're adding a bit more science to the design. A musical Tesla coil works by modulating the frequency of the electrical pulses sent to the primary coil, which in turn affects the spark discharge produced by the secondary coil, creating audible sound waves at different pitches depending on the modulation frequency, essentially acting like a "plasma speaker" that produces musical tones when the spark rat

Wevolver.com - This is a battery-powered Tesla coil gun...