You can tell a lot of effort went into this game. I'd say this is hands down the most innovative rhythm game I've seen since the first Guitar Hero. The tutorial was perfect. It showed you everything you need to know and moved quickly enough that you didn't feel bored. It's very tricky with a mouse. I imagine it's unbelievably fun on a touch screen or phone. I'm going to have to dig out my Wacom and give it a try with that.