Star Wars: The Force Unleashed soundtrack is a promotional release, not available for purchase. It is about 27 minutes long and features main themes and ambient cues. Mark Griskey created the soundtrack to tell the story and help define the new characters and environments that the plot unfolds in the video game of the same name. The music for this release was compiled and edited by Jesse Harlin, who also contributed to the score by composing the main Force Unleashed theme. The final game score includes extensive use of John Williams' original themes from the six films of Star Wars saga, bridging a gap between the music of the prequel trilogy and the original trilogy. The music was recorded at Skywalker Sound on September 23 and 24, 2007 and is available for listening on tracksounds.com.