As help needed!

I’m creating a rock out game and the notes come from the top to the bottom. That is all fine and I’m using intervals. However, because I am using alot of notes I have to script each note separately which gets long and tedious and I was wondering (there must be) if there was a much quicker way to move the notes down (all on first frame). What I’m doing right now is:

//A2//
p2=true;
t2 = false;
idvariable = setInterval(function () {
_root.t2 = true;
}, 4500);
//A3//
p3=true;
t3 = false;
idvariable = setInterval(function () {
_root.t3 = true;
}, 6500);
etc.

And the code on the actual notes (a2, a3 etc.):

onClipEvent (enterFrame) {
if (_root.t2 == true) {
this._y += 4;
}
if (_root.end.hitTest(this)) {
_root.t2 = false;
this.swapDepths(999);
this.removeMovieClip();
}
}

So I have to do that for each note and place each note on stage and as you can see it takes aloooong time. If anyone has any ideas on how to help me then please, please don’t hesitate to tell me. Thank you in advance.