

To unlock these epic tracks for use in the Black Ops Cold War Music Player, you'll need to complete a quest in the Outbreak mode for a chance to unlock the secret tracks. One of the key elements of Treyarch's Zombies mode, since its inception in Call of Duty: World at War, is its original soundtrack of metal music - primarily written by Kevin Sherwood. In the Music Player, players can unlock and queue several tracks from the Black Ops series' official soundtracks to play within the menus and even while in a Multiplayer and Zombies match. In Call of Duty: Black Ops Cold War, players are granted access to the Music Player, an in-game jukebox-esque system which functions as a native alternative to services like Spotify and iTunes.
