Composer Steve Jablonsky, who collaborated with Bay on The Island, scored music for the trailers before work began on the film itself. Recording took place in April 2007, at the Sony Scoring Stage in Culver City, California. The score, including the teaser music, uses six major themes across ninety minutes of music. The Autobots have three themes, one named "Optimus" to represent the wisdom and compassion of the Autobot leader, and another played during their arrival on Earth. The Decepticons have a chanted theme which relies on electronics, unlike most of the score. The AllSpark also has its own theme. Hans Zimmer, Jablonsky's mentor, also helped to compose the score.


Transformers: The Score is a soundtrack that features the musical score by film composer Steve Jablonsky for the 2007 live-action film Transformers. It was released October 9, 2007, on Jablonsky's 37th birthday. According to the back of the CD cover, 11 of the 20 tracks are arranged differently from what is heard in the actual film, resulting in extended but accurately complete soundtracks.