 The soundtrack is composed by the electronic musician Amon Tobin , composers James Dooley and Mel Wesson , and electric cellist Martin Tillman , under the direction of Sony 's music manager , Jonathan Mayer . Tobin was specifically brought on board due to his recent trend of blurring the lines between music and sound design as exhibited in his then @-@ recent album , Foley Room . Instead of using traditional instruments , the team sought to use sounds that results from objects that would be found in an urban environment and using such objects in combination with other instruments used in non @-@ traditional manners ; for example , bungee cords were strung alongside a bass drum and strummed , and wire brushes were hit against a suspended tuba . The music was divided between Tobin , who worked on the in @-@ game music , and Dooley who worked on the music for the cinematics ; the two worked together to make sure common musical themes were present in both aspects . Tillman was brought in late to the process to add the cello sounds , but the group was so impressed with his work that they remixed already @-@ completed pieces to incorporate his contribution further . Manchester music group , Working for a Nuclear Free City were commissioned by Sony to produce a song for the game . The song was penned " Silent Melody " and was used in one of the game 's promotional trailers . The soundtrack was released for digital download from the iTunes Store in May 2009 . 
