It is a soundtrack featured in the Call of Duty: Black Ops and Call of Duty: Black Ops IIIversions of the Zombies map Nacht der Untoten. It was written by Kevin Sherwood. It can be activated by shooting three of the exploding red barrels outside, seen from the barriers across the map. The ones needed to be shot can all be shot from the starting room, so it can be activated right at the start of the game.
The song can also be activated in Black Ops III by destroying all red barrels.
The song is an instrumental rock song that lasts for roughly four minutes, and features an electric guitar soloing most of the way through. An extended version of the song exists, and it lasts around five and a half minutes.
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Trivia
The song was originally meant to be for a campaign mission in Call of Duty: Black Ops, but the mission was later changed and the song was scrapped.[1]
The barrels do not need to be destroyed, only damaged.
