That's pretty impressive. Printer music goes way back, by the way. Here's a (low-quality) recording of a 1960s-era IBM 1401 mainframe playing the Blue Danube Wa

That's pretty impressive. Printer music goes way back, by the way. Here's a (low-quality) recording of a 1960s-era IBM 1401 mainframe playing the Blue Danube Waltz on a 1403 line printer: http://www.apropos-logic.com/1403music/1403_blue_danube.mp3 http://www.apropos-logic.com/1403music/1403_blue_danube.mp3 And here's the 1401 playing tunes on a radio via RF interference from the core memory: https://www.youtube.com/watch?v=EPk8MVEmiTI https://www.youtube.com/watch?v=EPk8MVEmiTI Unfortunately the 1401 at the Computer History Museum isn't currently authorized for line printer music because the stress might destroy the print chain and they don't have a replacement.