In the June issue of GameInformer, they confirmed that Harry Gregson-Williams is working on Advanced Warfare’s soundtrack. Harry Gregson-Williams is known for his work on the Metal Gear Solid franchises and some big Hollywood movies. 

Audio director Don Veca says, “I think Advanced Warfare is going to be the best-sounding and certainly the best-mixed game ever.”

Harry Gregson-Williams is a British composer who also did work on Call of Duty 4: Modern Warfare’s soundtrack.

SOURCE: GameInformer