The music for Warfighter was composed by Ramin Djawadi, who also composed the music for Medal of Honor (2010). The official soundtrack was released on September 25, 2012, on iTunes and Amazon, nearly one month before the release of the game. The soundtrack consists of 21 tracks, 2 of which were composed by Mike Shinoda, the co-vocalist and rapper of Linkin Park. Linkin Park's song "Castle of Glass" from their album Living Things serves as the theme song for Warfighter, and variations of the song appear on the soundtrack. Themes from the previous game reappear as well, albeit in slightly differed forms. The song was also released as a promotional single for the soundtrack just like the band's previous contribution of The Catalyst. The song was nominated for the "Best Song in a Game" award at the 2012 Spike Video Game Awards. The official video was released on October 10, 2012.
The soundtrack uses "Castle of Glass" as the theme song which as Loudwire noted in their Living Things review that the song features "very different electronic elements and unique sounding samples that the band have added to their musical palette." Yet is one of the most direct that the band has done, with a traditional song structure and a melody reminiscent of country music.