Btw, if you liked "Circus Galop" you should check out the composer Conlon Nancarrow. He was doing even crazier stuff with player pianos over half a century ago, such as ragtime-flavored pieces in multiple simultaneous tempi.
Write waveform harmonics IF it can fit. No clue about the song though.
You could prolly get allot of mileage with octave waves at least.
This was an interesting idea, by the way. I think you could get away with fifths too, maybe fourths. (Maybe even major seconds, but you'd probably be fighting your sampling resolution at that point.)
Umm... let's just call it UN Owen Was Her Piano Version, because well, that's the actual name. Hmm... but I think it can be done with N106 easily. Sometimes you just have to use arps (octave, like 00C).
The same I can say for Circus Galop. But well, in one moment there are 21 notes played, so...
The actual Faerie's Aire And Death Waltz is just a mess. It was supposed to be a joke(you can see a face on sheet). Just sayin'.