Most of the music for Call of Duty 4: Modern Warfare was written by British composer Stephen Barton, who had also contributed to film scores by Harry Gregson-Williams, to whom, composed the main theme of the game.
Musiken till Call of Duty 4: Modern Warfare komponerades av den brittiske kompositören Stephen Barton, som också hade bidragit till Harry Gregson-Williams filmmusik; Harry komponerade spelets huvudtema.