Avatar (2009 film) themselves to change into a Na'vi. "Avatar: A Confidential Report on the Biological and Social History of Pandora", a 224-page book in the form of a field guide to the film's fictional setting of the planet of Pandora, was released by Harper Entertainment on , 2009. It is presented as a compilation of data collected by the humans about Pandora and the life on it, written by Maria Wilhelm and Dirk Mathison. HarperFestival also released Wilhelm's 48-page "James Cameron's Avatar: The Reusable Scrapbook" for children. "The Art of Avatar" was released on , 2009, by Abrams Books. The book features
Avatar (2009 film) The first scoring sessions were planned to take place in early 2009. During production, Horner promised Cameron that he would not work on any other project except for "Avatar" and reportedly worked on the score from four in the morning until ten at night throughout the process. He stated in an interview, ""Avatar" has been the most difficult film I have worked on and the biggest job I have undertaken." Horner composed the score as two different scores merged into one. He first created a score that reflected the Na'vi way of sound and then combined it with a separate