Thanks for playing and the kind comments! Yes! The direction matters, if its a down arrow, you have to spin down and the same goes for up arrows. if it is both at the same time, then you have to go up and down quickly .
Right, I was wondering if you ever experimented with making it so the notes corresponded to rotating the disk clockwise and counterclockwise instead of the mouse up and down? That's closer to how a turntable actually works in real life, although I imagine it may make the UI a little less intuitive.