Looping synth is a basic sine wave synth running into a looper.
It goes into a chorus and a reverb just because I love how they bring life to everything, but feel free to change them if you prefer other effects.

Left stompswitch: goes to recording on the looper.

The magenta keyboard (bottom right – front page) manipulate the looper’s pitch, -12, -7, 0, +7, +12.