A portion of a Gameranx interview with Jack Wall...

G: You've been composing game music for a very long time - how does Black Ops 2 compare to games you've composed for previously? How does the music you've created this time differ?

JW: I’ve done a lot of story-based games – Myst, Jade Empire, the Mass Effect series. The story aspect and role playing/adventure aspects of those games allow some subtleties that shooters generally don’t. Call of Duty is such an adrenaline-filled experience from start to finish, however, we wanted to bring as much emotion as possible to the story for this one. The single-player campaign is of huge importance to Treyarch. My job was to help forward that story as much as possible.