Expression Pedal Heel: Pitch A = 0.995
Expression Pedal Heel: Pitch B = 1.005
Expression Pedal Toe: Pitch A = 0.950
Expression Pedal Toe: Pitch B = 1.050
Downward & upward 'belltree' microshifts in two phase-offset loops (eventual long decay).
Flex switch adds repeat stutters inside the loops.
Expression pedal changes recirculating pitches from +/- 5 cents to +/- 50 cents.
