<P> Composer James Horner scored the film, his third collaboration with Cameron after Aliens and Titanic . Horner recorded parts of the score with a small chorus singing in the alien language Na'vi in March 2008 . He also worked with Wanda Bryant, an ethnomusicologist, to create a music culture for the alien race . 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 till 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 "traditional" score to drive the film . British singer Leona Lewis was chosen to sing the theme song for the film, called "I See You". An accompanying music video, directed by Jake Nava, premiered December 15, 2009, on MySpace . </P> <P> The first photo of the film was released on August 14, 2009, and Empire released exclusive images from the film in its October issue . Cameron, producer Jon Landau, Zoe Saldana, Stephen Lang, and Sigourney Weaver appeared at a panel, moderated by Tom Rothman, at the 2009 San Diego Comic - Con on July 23 . Twenty - five minutes of footage was screened in Dolby 3D . Weaver and Cameron appeared at additional panels to promote the film, speaking on the 23rd and 24th respectively . James Cameron announced at the Comic - Con Avatar Panel that August 21 will be' Avatar Day' . On this day, the trailer was released in all theatrical formats . The official game trailer and toy line of the film were also unveiled on this day . </P> <P> The 129 - second trailer was released online on August 20, 2009 . The new 210 - second trailer was premiered in theatres on October 23, 2009, then soon after premiered online on Yahoo! on October 29, 2009, to positive reviews . An extended version in IMAX 3D received overwhelmingly positive reviews . The Hollywood Reporter said that audience expectations were coloured by "the (same) establishment skepticism that preceded Titanic" and suggested the showing reflected the desire for original storytelling . The teaser has been among the most viewed trailers in the history of film marketing, reaching the first place of all trailers viewed on Apple.com with 4 million views . On October 30, to celebrate the opening of the first 3 - D cinema in Vietnam, Fox allowed Megastar Cinema to screen exclusive 16 minutes of Avatar to a number of press . The three - and - a-half - minute trailer of the film premiered live on November 1, 2009, during a Dallas Cowboys football game at Cowboys Stadium in Arlington, Texas, on the Diamond Vision screen, one of the world's largest video displays, and to TV audiences viewing the game on Fox . It is said to be the largest live motion picture trailer viewing in history . </P> <P> The Coca - Cola Company collaborated with Fox to launch a worldwide marketing campaign to promote the film . The highlight of the campaign was the website AVTR.com . Specially marked bottles and cans of Coca - Cola Zero, when held in front of a webcam, enabled users to interact with the website's 3 - D features using augmented reality (AR) technology . The film was heavily promoted in an episode of the Fox Network series Bones in the episode "The Gamer In The Grease" (Season 5, Episode 9). Avatar star Joel David Moore has a recurring role on the program, and is seen in the episode anxiously awaiting the release of the film . A week prior to the American release, Zoe Saldana promoted the film on Adult Swim when she was interviewed by an animated Space Ghost . McDonald's had a promotion mentioned in television commercials in Europe called "Avatarize yourself", which encouraged people to go to the website set up by Oddcast, and use a photograph of themselves to change into a Na'vi . </P>

Was the movie avatar based on a book