shftwhtred
Description
Based on the "OP-1 does TB-303 How-To" video (not really 303 though). https://www.youtube.com/watch?v=38Yv79tOrF4
On the first synth screen, press down shift and use the white knob (both directions) and the red knob (counterclockwise) to create some interesting effects.
You can also experiment with setting decay and sustain all the way up (and then you can try changing the sustain as well).