Sample & Hold by d/e
Classic Sample and hold melody. Plug in the Ext. Audio but leave it disconnected. Change the Assign to be the Random voltage option (number 8)
You can use the Cutoff, Resonance, and VC Mix to control your parameters. Toggle on the sustain for a slower tempo.
Frequency, VCO Wave, Pulse Width, Glide, LFO Rate & Wave, VCO Mod Source & Destination, and VCF Mod Source are all irrelevant here.