Abstract: An apparatus, that allows one to control the operation of a musical instrument, includes: a rotatably mounted, circular cylinder having on its outer surface rings of individual lights, a photosensor associated with each ring of lights that yields an output signal that controls the operation of the musical instrument's strikers, a rotation sensor that provides a rotation output signal indicative of the cylinder's rotational position, a programmable controller with a memory storage element, a means for inputting into the memory storage element a music input signal having the information necessary to cause the acoustical members of the musical instrument to play a desired musical composition, and a software program that uses the music input and rotation output signals to generate a control signal for the light's power source that intermittently illuminates the rings of lights so that the photosensors output signals cause the strikers to create those sounds required to play the desired musical composition.