MIDI

Stands for "Musical Instrument Digital Interface." It is a connectivity standard that allows musicians to hook together computers and musical instruments (most commonly keyboards and synthesizers). Using MIDI, the musician can easily create and edit digital music tracks. MIDI records the notes played, the dynamics (volume alterations), the tempo, and the instrument. Because the recording is completely digital, editing a track of MIDI music is super easy and accurate. The musician can change the notes, dynamics, tempo, and even the instruments with the click of button. However, though MIDI files take up very little space, standard MIDI allows few effects and is pretty low-quality. Therefore it is seldom used in professional soundtracks (like the music in computer games).