Musical Instrument Digital Interface, an eight bit serial communications code that travels at a baud rate of 31,250...

MIDI Maze Atari Game

This one was really cool. MIDI Maze was a game developed by Xanth Software F/X for the Atari ST line of computers. MIDI Maze used the Atari ST's built-in MIDI interface to allow for true 16 player networked gaming (one per MIDI channel i suppose). This was way back in the 1980's, well before TCP/IP or IPX was any where near common in the home, very innovative, out-of-the-box use of the MIDI hardware.That's the type of innovation that is rarely seen these days.

Opcode Studio Vision MIDI Sequencer for MacOS Classic

Opcode released their flagship MIDI sequencing software Vision back in 1989 for the Macintosh. Vision was very well received and was on the top of it's game at the time, winning several awards. It was in 1990 however that Opcode gave birth to Opcode Studio Vision.

I have a lots of fond memories of hours upon hours spent in Studio Vision. Studio Vision stood out as the first MIDI sequencer to integrate digital audio recording. It was the first sequencer that i ever owned (software or hardware) and served me well starting back in 1991 on my old Mac IIci.