highest A violin 1760

c0 from divider = 4186
c1 = top output of divider chain = midi C7 = 2093Hz
c5 = bottom of divider chain = midi C3 = 130.81Hz

RC networks = capacitor and effectively 10k because of the diode and 27.6k resistor network

c1=2842
c6 = 

Each key drives two sets of gates, for 4' (violin) and 8' (viola/trumpet/horn)
Five sets of gates apiece

C6 is the *lowest* note
C1 is the *highest* note

Viola filters
C5  to G#4 = D43  10k/18n/5k6 180n/22k/10k
A4  to F#3 = D41  10k/12n/8k2

G3  to E2  = D39  10k/10n/10k 270n/22k/10k
F2  to D1  = D37  10k/4n7/12k
D#1 to C1  = D35  10k/2n2/18k

Violin filters
C5  to G#4 = D105 10k/68n/5k6 47n/22k 4n7/10k
A4  to F#3 = D103 10k/47n/8k2 47n/22k 4n7/10k

G3  to E2  = D101 10k/22n/5k6 47n/22k 1n/18k
F2  to D1  = D99  10k/10n/8k2 
D#1 to C1  = D97  10k/5n6/10k

Cello filter = 6n8/50k
Bass filter  = 10n/50k

bass lowpass filter = 2-pole  208Hz / Q=1.4

prechorus lpf = 12600 Q=1.3