bounce.

[Frank]

Code:

var x = 0;
var dx = 1;
var y = 0;
var dy = 0;
var ddy = 0.5;
for (var i = 0; dx > 0.01; i++) {
 song.addNote(new Note(song, piano[Math.ceil(y)], x, dx, 0));
 x += dx;
 y += dy;
 dx *= 0.999;
 if (y > piano.length) {
   y = 71;
   dy *= -0.9;
 }
 if (y < 0) {
   y = 0;
   dy *= -0.9;
 }
 dy += ddy;
 if (Math.abs(dy) < 0.1) ddy *= -1;
}

##987654
bounce.
remix.