Not too bad.
I'm just going to jump right into it.
Music: Very repetitive. I like the beat and such but it is too repetitive.
Concept: Jumping on buildings, collecting books. Avoiding objects, interesting I guess.
Controls: The controls are basic, but he doesn't jump high enough for most building unless you're at the edge (And I mean edge) of a building. Can't slow yourself down fast enough as well.
Graphics: Alright, maybe could use some tweaking, but otherwise okay.
Final note: What happens if you collect a set of books or all books? Why is he collecting them? You should build a story and a strong character.
~Burningfox6