The Phantom of the Opera film had a book too. While I haven't seen the other books listed I enjoyed the Phantom one. It had behind the scenes photos and the full script.
I think they should do a Mamma Mia one. I bet it would look fantastic.
"All our dreams can come true -- if we have the courage to pursue them." -- Walt Disney
We must have different Gods. My God said "do to others what you would have them do to you". Your God seems to have said "My Way or the Highway".