MIDI stands for Musical Instrument Digital Interface. As the name suggests, it is a way of connecting different musical devices together so they can exchange information with each other. It is important to note here that MIDI is based upon a transaction of information rather than actual sound itself.
MIDI is not sound. It is simply a set of instructions that can be sent to a sound-producing MIDI device.
Understanding how MIDI works
The process of typing words on a computer is similar to transmitting MIDI data. Words are entered into a computer via a keyboard, not a musical one but a so-called QWERTY keyboard (named ...