I LOVED IT!!!!
The music is PRECIOUS, the gameplay is quite ingenious, the graphics are spot on and the theme is just so endearing!
Only caveat I had were the collisions. They are too severe and may feel unfair at times. A lot of times it felt like hitting the floor on time killed me and doing it too early seemed to work even though I felt it shouldn't. Also the side collisions killed me too many times...
It may be on purpose, but if not, it helps to let the "feeling" get preiority over precision (I don't doubt that the collisions were "just"). This is a lesson that I learnt from Canabalt many years ago, allowing the player a little bit of extra room to fail.
I got stuck on the bifurcation for a long time and after getting past it and dying to something stupid I decided to just play ONE more time as long as I cleared the bifurcation again.
I did and then... and then I got to the end and was so happy! I'm glad that I persevered!!
Awesome game ^__^