@BitBorderliner I don't mean the way he uses his left thumb to add very short notes just before his right hand does. I mean the way that in addition to that he taps on the key immediately to the left without actually pressing it.

I'm no pianist. But if I understand it correctly he's basically playing two separate patterns with each hand, offset in phase slightly to get the fast "center" tempo.

@pete he is playing an arpeggio (like one would compose on a monophonic synthesizer to get a sense of harmony whilst all notes are played after one another because the synth can only produce one note at a time) old game consoles with for instance SID chips would use a similar technique at the basis to sound multitone like paying chords (playing notes at the exact same time. The left thumb is just moving out of the way to make space for the right thumb when it arrives

@pete he is playing separate patterns in time. You may see it as note time multiplexing 😉 For the pianist it’s not so much which hand is playing, but which finger can reach the next note. And then putting in the time to train the muscle memory to take the whole thinking out if the music paying process

@pete *paying = playing

@pete *if = of