I recall the attention of Listmembers to the thread some months (a year?) back, concerning the various pieces of music actually programmed into the driver routines of some large plotters... IIRC there were some Calcomp models that could, by means of undocumented button-presses, be made to launch into a stepper-motor rendition of Wagner's Ride of the Valkyries.. and others that knowledgeable folk offered at that time. Cheers John