MIDI (musical instrument digital interface), is a protocol invented in the early 1980s allowing basic communication of MIDI messages, such as velocity and note on or off, between MIDI-enabled equipment. These days, MIDI gear generally refers to equipment, using the same protocol, that can control your software with a practical hands on approach. Sounds Easy stocks a range of MIDI keyboards, software surface controllers and dedicated MIDI interfaces - essential to bring all your non USB to host MIDI equipment directly into your computer.