Abstract: The music roll perforating system permits a paper music roll to be perforated from a special previously prepared magnetic tape containing a digital recording of a music rendition. The process and apparatus disclosed uses a small computer to drive a music roll perforator through a driver box. The driver box accepts a serial data stream from the computer and converts it into parallel channels with high current/high voltage outputs capable of driving the solenoids used in a conventional music roll perforating machine.A magnetic tape recorder is attached to the computer for the dual purpose of either loading a computer program into the computer following turn-on or for reading the specially prepared digital recording into a computer memory. A Teletype machine is also attached to the computer to permit input to the computer from an operator.