you do understand he isn't really playing notes with his balls...
it is possible to program a keyboard to play a certain series of notes regardless of which keys are being pressed, which, i believe, is the case here. then it's just up to him to bounce the balls at the proper tempo - no easy feat in and of itself - in order for a recognized melody to emerge.
to use his words: Bravo!
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JSFBOA
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N = R* fp ne fl fi fc L
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