MIDI Controllers

A MIDI controller is any hardware or software that generates and transmits Musical Instrument Digital Interface (MIDI) data to electronic or digital MIDI-enabled devices, typically to trigger sounds and control parameters of an electronic music performance. The most commonly used MIDI controller is the electronic musical keyboard MIDI controller, which has keys that can be pressed. When the keys are pressed, the MIDI controller sends MIDI data about the pitch of the note, the velocity and duration, which can be used to trigger sounds from a MIDI-compatible sound module or synthesizer.