Get it while it's cheap, then you have a PS4 game should you decide to buy a PS4 as Soundshapes is coming to that too :)
It's a very nice little game. I love the death mode challenges and was gripped all the way through. It might be on the easy side, but the main draw of the game is how well the music comes together as you play through it rather than for it to be a challenging game.
Sleepyprince, if Soundshapes is too easy for you, make harder levels for it ;)