However, if you're someone that's looking for fast-paced metal or the like, this probably won't satisfy you. Most of the ambiance is taken from the Doom 3 Alpha. them' theme, as well as emulate what kind of level you're in (ex, computer drones and noises in E1M7), unless you're ending or starting an episode, in which a more musical track will play. In case you're wondering, it's a sort of 'experiment' in which the background music for Doom/Doom II is replaced (almost) completely with ambiance which will make the game more atmospheric and sinister to further convey that sense of loneliness in that 'you vs.