Music is an integral part of any game. It's important that the right composer is put in charge of bringing the aural atmosphere to life. For Fallout 3, the right man to pen the musical score would apparently be Inon Zur, composer of game soundtracks from Crysis and Prince of Persia: The Two Thrones.
Fallout 3 executive producer Todd Howard had this to say about Zur's original music for the game: "He's created a score that has epic sweep; from the lonely ambience of the wasteland to dramatic fights for survival." True enough, Zur is well-known for that sort of sound. Don't believe it? Then hit up Fallout 3's official website to listen to three songs from the soundtrack. Also, you can hear some of Zur's older work at his official website.
[Via press release]