There's a beautiful piano instrumental in the film...I'm not sure who the composer is, but I don't think it's James Horner and it's not on the soundtrack. I think it occurs when he is writing on the window of the library...don't quote me on that one though.

Does anyone know what the title of the song is and the composer? Or, do they know where I can get hold of sheet music for the song?

I want to perform this piece in a few weeks' time, so any help would be much appreciated.