@loadhigh @likesoldmacs iirc MIDI synthesis is handled by the version of QuickTime installed on the system, so the music could sound radically different between a PB running System 7.x and an iMac running >OS 8.6. I think QT4 and up are using a General MIDI library that samples a Roland SC-55, which is roughly the same thing Windows was doing starting from around 2000 or so.