Toshiba MSX Music keyboard HX-MU901 with FM-Synthesizer cartridge HX-MU900
The HX-MU901 Music Keyboard Unit is a 49-key music keyboard released by Toshiba in 1985. It includes a Multi-Sensor zone at the top.
The accompanying HX-MU900 cartridge has a built-in music program, called ‘
MSX Music-System’ that boots up automatically, but can be skipped by holding the ESC key. The menu of this specific utility gives access to three FM musics and a music editor. From MSX-BASIC, it can be launched by entering CALL SYN or _SYN