This is the MPK Akai Midi Controller

This dial lets you detune an instrument and sounds amazing with synths

The Apreggiator allows you to make a beat “bounce”, tap the tempo in rhythm to determine the tempo of the beat

Since the controller is only 25 keys, the octave climber lets you use it as an 88 key controller

These are your notion pads, drums or sounds can be assigned to them so you can record both keys and pads at once

These dials let you mix the sounds in and are mostly used for live recording or live shows

This is your standard 25 key layout for a midi controller, it can be played just like a piano