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Where to find the cassette tapes and activate the secret Easter egg song in Firebase Z in Call of Duty: Black Ops Cold War

Another Zombie secret song to listen to while mowing down the undead.

A Zombies map in Call of Duty: Black Ops Cold War is not complete without its share of secrets. Treyarch makes a point to fill these areas with Easter eggs and oddities for the Zombies community to find, and the payoff always feels great. In Firebase Z, they have continued their tradition of hiding away a secret song that you can activate to play while you fight the undead. Like the Die Maschine Easter egg song, this is done by finding three cassette tapes hidden around the map. Here is how to find them.

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First cassette tape

You can find the first tape as early as round two in a match. It is inside Equipment Storage (the door you unlock on your way to the teleporter to the Firebase) on a shelf filled with ammo boxes to the left of a cabinet with a keypad. Interact with it to pick it up.

Second cassette tape

The second tape will require you to travel to the Firebase through the teleporter and open the gate on the right to access the Motor Pool. On the immediate right, enter the office and look at the desk and filing cabinet. The cassette is leaning against the cabinet on the floor in between the two.

Third cassette tape

For the third tape, you need to turn on the power for the map by activating the three Aetherium generators around the Firebase. When done, go back through the teleporter to return to the village you started in. Now that power is on, you can access the rest of the building that Ravenov is in.

You can find the third and final cassette tape on a bookshelf in the Scientist Quarters. This area is up the stairs from the Armory and almost directly above the Wunderfizz machine. Interact with the cassette, and you will pick it up, and the song will soon begin playing if you or a teammate grabbed the other two as well.

From our experience, the song was kind of difficult to listen to when playing with the default audio settings. If you want to hear it better, be sure to adjust your audio settings.


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John Hansen
John Hansen is a Full-time Staff Writer for Gamepur as well as a host for the YouTube channel Pixel Street Videos where he co-hosts a weekly gaming podcast and more. His favorite games include Super Mario 64, The Legend of Zelda: Ocarina of Time, Breath of the Wild, Left 4 Dead 2, and Overwatch. He covers Overwatch 2 and other FPS titles, Minecraft, Sonic the Hedgehog, Legend of Zelda, and whatever zombie games are placed in front of him.