Rhythm Paradise Q&A

This game is driving me mad! Im stuck on level one, i missed one square and still i have failed why is this?

the awnser is here so don't fear all you have to do is complete the building level with a OK 3 or less squares lost , superb 2/1 or less squares lost plus all suares put together in the dark or Perfect no squares missed plus in the dark lvl plus put together ...