hah, I've already wasted hours on it
Very nice looper.
It reminds me of a game I used to play called Line Rider; its non-musical, but you draw lines just the same for your little character to ride on (you can basically create your own obstacle course for him)
Here's a preview of it on YouTube
http://www.youtube.com/watch?v=LeBO8y5nRYUHere's a pro having a go at it (wayyyy too much time spent on it haha)
http://www.youtube.com/watch?v=bcu8ZdJ2dQoYou can download it for free pretty much everywhere, but here's a site:
http://fsk.deviantart.com/art/Line-Rider-beta-40255643