What is the assassin's creed 2 credit song?

There is on Theme song for the whole Assassins Creed sieries. i will show you the notes frome low at 1 -high and the lengths of each note.0 means nothing. This is how much i know. 3__ 4__ 5__ 6 __0_3__4__5__4__. That is the easiest part to remember.