Buchla 200 analogue modular in action. The touch keyboard is working as one 16 note sequencer while the smaller 5 x 4 sequencer makes the other sequence..
Some more buchla. The chords are set up by the 5 x 4 sequencer which is just triggered from the 4 touch plates on the left. The sequence is one oscillator sequenced from the main touchpad.
Using EML Polybox, you can make polyphonic sound with 1 VCO monophonic synthesizer. Connection is Korg MS-10(1VCO synth) VCO out (customized) --- Polybox --- MS-10 VCF in