XG is a type of Midi file. Developed by Yamaha, XG files have a wider range of sounds than standard MIDI files. Instead of the standard 128 sounds, XG are capable of using 600 or more sounds. Learn more
X9 is a type of MIDI file made exclusively for the PSR-9000 keyboard, these files take full advantage of the expanded range of sounds available on the PSR-9000. Learn more
XA is a type of MIDI file that improves on the range and sound quality of XG files. This file type is generally compatible with all Yamaha keyboard models made after 2000. Learn more
MIDI files are digital files that can be loaded into keyboards, synthesizers and other instruments, and played back using the sounds of that instrument. Learn more