the VCLFO in the case 
EDIT :
I realized that with the VCA which interrupts the sound that the LFO demo at the beginning was not very good, I remade a small one for my site, I put it to you too.
A note, the switch to engage the sync only works when the Dist pot is at 10, then I can adjust it but to engage the sync it must be fully, a little strange but it is enough to know
Sync with drum at the end :
