Musical Instrument Digital Interface is an American-Japanese technical standard that describes a communication protocol, digital interface, and electrical connectors that connect a wide variety of ele
Using MIDI, a single controller (often a musical keyboard, as pictured here) can play multiple electronic instruments, which increases the portability and flexibility of stage setups. This system fits into a single rack case, but before MIDI, it would have required four separate full-size keyboard instruments, plus outboard mixing and effects units.
Smaller MIDI controllers are popular due to their portability. This two-octave unit provides a variety of controls for manipulating various sound design parameters of computer-based or standalone hardware instruments, effects, mixers and recording devices.