Korg MS-20 - Independent melodies

YouTube via Newueel
"This is the Korg MS-20 playing two independent melodies at once. All sounds are coming from the MS-20 only!

Both VCO's use different keyboards for creating independent melodies. VCO 1 (CV) is played by the secondary keyboard using the ESP. VCO 2 (CV) is played by the MS-20 keyboard.

Just in case you wonder the secondary synth is a Korg Triton ('99).

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KNOBS:
VCO1: [Triangle] [(n/a)] [32']
VCO2: [Sawtooth] [0] [2']
PORTAMENTO: [4]
VCOMIX: [ 9] [ 8] [ 0] [10]
HPF: [ 6] [ 7] [ 6] [ 0]
LPF: [ 5] [ 8] [ 0] [ 0]
MG: [^(middle)] [0]
EG1: (n/a)
EG2: [0] [0] [10] [10] [3]
ESP: [5] [2] [8] [9] [5]

PATCHES:
(alternate keyboard -> VCO1)
1. ALTERNATE KEYBOARD (AUDIO OUT) -> ESP (SIGNAL IN)
2. ESP (CV OUT) -> VCO1+2 (CV IN)
3. ESP (TRIG OUT) -> (TRIG IN)

(MS-20 keyboard -> VCO2)
4. KEYB (CV OUT) -> VCO2 (CV IN)

(varying frequency)
5. CONTROL WHEEL -> VOLTAGE CONTOLLED OSCILATOR 1+2 (FREQ)"