A MIDI keyboard is often a MIDI controller. When we talk about instruments, we’re not always talking about hardware. These messages are interpreted by a MIDI “instrument” to create sound. Rather, it’s a series of electronic messages like, “note on, note off, pitch bend, modulation increase,” and so on. It was developed in the 1980s to allow digital instruments to communicate. MIDI stands for Musical Instrument Digital Interface.
It’s worth taking a moment to understand what “MIDI” is.