The Axoloti in the video below is the following things:
MIDI thru unit (MIDI DIN in, out to USB and DIN out)
Audio processor: Distortion, high-pass filter, Sub-oscillator (sinewave) and Side-chain
The MPC 500 outputs MIDI to the Axoloti, forwarding the notes to the Sammich SID, output of which is fed back into the Axo. This can make the Sammich produce incredibly powerful Reece bass sounds with the abrasive distorted 6581 waveforms together with a clean sub.
Track 1 on the MPC is always a drum track with kick drum only, putputting MIDI on channel 10. The incoming MIDI notes on MIDI channel 10 are used as a side-chain trigger for the Sammich, and the pot sets the threshold value of the compressor.
I aimed for a Juke track with chiptune influences, enjoy!