i was thinking, specifically, about a way to interpolate bezier curver between fixed points to hand code in a custom envelope shape and a(s)dr values, perhaps with a reverse attack shape and maybe an added lfo sine lfo signal frequency modulating another sine lfo signal, or other experiments that might produce novel envelope packets, then setting all the parameters and saving it out as a wav, all in puredata. also, the simple melody you chose also highly resonates with the conceptual ideas ive been playing with, but i was thinking about also 3 additional melodic voices harmonizing and playing different parts at the same time. maybe, if the universe ever grants you more rack space you might consider trying to fill out exactly this with 4 full melodic voice parts which it sounds like to me is totally possible, if the rample wasnt also doing some drum parts in your patch. i dont mean this as a slight, only that i can already kind of hear 3 more melody parts in what is there r now.
peace