Serge VCFQ feedback visualized 

By XYing two of the VCFQ outs I got circular and spiral shapes…
One funny thing, about that “melody” you listen at some spiral point, I got to it by total surprise as I tweaked a transient generator cv in pot that was attenuinverting the transient gen signal itself in. That signal was modulating…damn I dont remember anymore, either the VCFQ freq or the ALLpass xfade I set up to feedback back into the VCFQ.. :)))