It allows you to communicate pitch information either internally (if it has its own sounds) or to software or other hardware devices. The Keyboard is probably the most common type of MIDI controller for obvious reasons. I hope to clarify the main considerations in choosing a MIDI controller in this article so that the reader can avoid the pitfalls of over-buying or under-buying, both of which may cost you more money and create frustration down the line. are all important things to consider when choosing a controller. The devices and software that inhabit your studio or make up your rig, the type of audio production or music creation you’re engaged in, your needs for portability, your skills as an instrumentalist, etc.
With the recent introduction of MIDI 2.0 and in particular, the new MPE (MIDI Polyphonic Expression) capability of a growing number of devices and software instruments, it is clear that MIDI as a means of inter-device and inter-application communication in music is a rock solid component that will be around for years to come.
It was a good system that stood the test of time relatively unaltered. The THRU output allows messages received via MIDI IN to be sent through unchanged so that multiple devices can be daisy-chained. The connections were made via DIN-style connectors with IN, OUT and THRU connections being typical. MIDI controllers have been around since the protocol was developed by Dave Smith and Ikutaru Kakehashi in the early 80’s ( source).
