Build a 3D printed USB MIDI controller that features keyset style switches, potentiometers, a rotary encoder, and an OLED DISPLAY using CircuitPython code powered by the Adafruit KB2040. 
The OLED features a GUI that allows customization of MIDI notes, velocity, channel, and MIDI CC messages. Five CHOC key switches are used to trigger MIDI notes, and the potentiometers can adjust modulation and LFOs.

https://learn.adafruit.com/midi-keyset