You see the "start/stop" knob not flashing , he plays with a Midi file
or audio file .he can also use a "Chord" tracker file the Break button does flash sometimes .

Impuls smile
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Genos2,Korg Pa5X , Yamaha YC61, Ventilator2 . : https://www.youtube.com/channel/UCmC6hdAR1v5lYN8twfn0YbA