A simple eight-bar repeating sequence on two voices, with each CV
fed through one channel of the MSK 008. Attenuated sine waves from an MSK
010
drive the quantizer (octave shift) inputs, and another attenuated sine wave
through a Penrose Quantizer with a carefully chosen scale drives the CV2
input, which is normalled to both channels, one adding, one subtracting.
The
trigger input on the Penrose is also sequenced. The result is that octave
shifts happen more or less at random (from the unsynchronized sines) but
transposition shifts, which change the harmonic structure, happen at
musically
relevant times and in a way that keeps it all more or less diatonic. The
Penrose only handles positive voltages, so the harmony-shifting
transpositions
choose the raw unshifted sequences about half the time, whenever the sine
happens to be negative as the trigger comes in. That keeps it all more or
less in key, but with enough chromatic departures to stay interesting.