Hmm... could do with something 'more'...
I like it. Its good ol' Breakout. However its not perfect [nothing ever is :( ]. You need sounds and music yeah, but they arn't the only problems. You need more colour thats for sure. And I do have an idea, ok it might not be exactly 'classic' but I think you should add powerups. You know, ones that make you paddle longer or give you another ball or some sort of laser, I don't know but it would make the game better. Oh one last point: in some of the later levels try adding enemies that come down fast and take multiple hits to kill.