One MIDI controller includes a number of knobs, sliders, sensors and other buttons along with an optional keyboard system. What MIDI controller actually does is that this combination of hardware and software produces and transmits data to devices that are MIDI enabled and it is used to control all the parameters for a particular performance or production. With the aid of this interface, a composer can create different parts of music with varied styles all by himself. A correct combination of software and hardware is implied to make this interface run well along various channels.
It is more truly termed as a computer with controls of recording, playback and other control options with the aid of which musicians can create music in a unique way. This protocol was developed back in 1983 that would give control to a synthesizer to play another with the aid of control data. MIDI, the term stands for the Musical Instrument Digital Interface.