In the '68-70 timeframe I heard an amazing rendition of the Barcarole on the tape reader of an HP 2115 using the pinch roller solenoid with a punch card inserted as a resonator. However, the best use of music on computers was done by a friend who received special treatment from the Cyber operators after playing Charge on the high speed chain printers at the end of his job. Since he didn't advance the paper the printing effectively cut the paper causing the next several jobs to make an squirel's nest out of the insides of the printer. CRC