 The music of Mass Effect 2 was primarily composed by Jack Wall. His previous work with BioWare was as the main composer for Jade Empire and the original Mass Effect. The score also features some pieces by Sam Hulick, David Kates, and Jimmy Hinson, with additional editing and in-game implementation by Brian DiDomenico. Unlike the original Mass Effect, the composers aimed for a darker and more mature sound to match the mood of the game. The music incorporates both orchestral and classic sci-fi arrangements which were inspired by the soundtrack of the cult classic film Blade Runner and music by German electronic group Tangerine Dream. The harmonic structure of Wendy Carlos's Tron soundtrack also represented significant influences. To complement each character, the composers gave them their own theme song to convey their personalities and backgrounds. According to Kates, "it was one of our mandates to create a dynamic score that expressed a wide range of emotions."
