MIDI messages are made up of 8-bit words that are transmitted serially at 31.25 kbaud.
MIDI to MP3 - Convert file now View other audio file formats Historically you would have needed four separate keyboard instruments, but now with MIDI files you can play multiple instruments from a single controller. The MIDI file contains messages that specify notation, pitch, velocity and control signals for volume, vibrato, audio panning that synchronise tempo between multiple devices. The MIDI file was developed to allow both musicians and audio developers to transfer MIDI data from one software application to another.