@schamspeare only just seen your question, sorry! Yes, there's some Serge in there, but it's all so rammed together amd micro-edited it's hard to pick out! From memory I spent a bit of time pinging VCFQ with self-feedback FM path (hi-pass into FM input), which makes things a bit gnarly. I was also controlling filter frequency with Blippoo runglers (and possibly running Blippoo through filters) so line between Blippoo and rungled Serge gets a bit blurry!