not too bad
its definately good, just a bit slow, um as far as music goes, i guess it works but i think you could come up with something better, yes it was out of sync but you can fix that, with the backround though, im sure you ment to have them stay in white backrounds, to give it a certian effect. if not, just create a new scene and have the first one lead to it that way you can have the backround all black when you change the properties of the backround for the scene.