Can My HQ-100 or MX-100II Play MIDI Files?
Usually, no. The Yamaha MX-100II and its Japanese counterpart, the HQ-100, normally play Yamaha’s proprietary E-SEQ files from floppy disk rather than standard MIDI files. However, some later-production units do appear to support SMF Type 0 MIDI playback from floppy disk, depending on ROM version. For the broader model picture, see my Disklavier Compatibility Table. … Read more