Libyrinth by Pearl North

He tilted his head to one side and leaned in toward her, peering at her like she was a wounded bird. "You don't know the Song." "Does it go, 'oh Susanna, oh don't you hide from me, I've come from old Ilysies with a ten-pound block of cheese'?"
The Libyrians live in a library so vast that no one knows all the books that are in it. Haly is a clerk to a Libyrian- her job is to run errands, catalog books, and pretty much do whatever is asked of her. Haly, however, is different then most of the other Libyrians. She can literally hear the books. Whenever she's close to one, she can hear it's voice, she can hear it's story. She finds out that her mistress has found the Book of Night, or the book that contains all knowledge. the person, though, that was meant to be helping her mistress, is a traitor, and Haly, her friend Clauda, and her mistress, Selene, have to go to find the book, before the Eradicants, or book burners. When Haly is captured by the Eradicants, however, she finds quite a different world then she or her friends ever imagined. She must find a way to reunite both worlds- that of words, and that of song- before the Libyrinth is destroyed, forever.
A mischievous smile curled the corners of his mouth. "They've obviously got it all wrong. you opened my ears to the truth. And I do believe that the divine runs through you, but if it turns out that the divine is a bunch of tiny red demons, well then I think it serves some people right."
This was one of those books that you literally can't put down. I started it, didn't like the beginning, and closed it up, to put it away, but it kept bugging me. "What is going to happen," I asked myself. "What sort of things does Haly have to go through?" And I continued reading. Although I may not have liked the beginning, I may have thought "who cares about Haly" at first, later I proved myself wrong. This was an amazing book, and I stayed up past midnight, just to finish it. I'd definitely recommend this to anyone, and I'd give it five stars out of five.