Your value for C1 makes no sense when you know that A 440 (tuning fork) is A4.
Thanks for that link just what i was after Yes my values I wrote above make no sense at all , I just made them up for the example.
This will help me tune hardcore Kick Drums when Designing with Drum OSC in modular, If there Is a simpler way - My ears are wide open
btw, to flexor users, does flexor have modules that allow you to easily go back and forth between freq and Midi note value? I remember there was a workaround with the stock modIII modules (using the curve scaler I think) but I was wondering if flexor had modules specifically for that purpose.