Not Ready to Die
The song Easter egg of Call of the Dead is “Not Ready to Die”, written and played by Avenged Sevenfold for the map. To start it, hold the use button on three Element 115 meteorites, in any order:

Starting area meteorite
By the water, on the leftmost of three metal barrels, two standing and one on its side, among bushes against an ice wall.

PhD Flopper meteorite
Past the left-hand wreckage and the cave, down the stairs behind the Box spot at the foot of the lighthouse, in the PhD Flopper room, under a small nightstand with a clock, next to an upturned bed.
Ship meteorite
In the mess of the ship, past the right-hand wreckage from the starting area. Take the door just right of the stairs to the power room and follow the corridor to the booths: it is on the left seat of the rightmost booth.
Only the first one is in the First Room, so the song cannot be played without opening a door. The song names Group 935 and Samantha Maxis, and its single cover looks like the map’s promotional poster. It also played at the start of Blackout matches in Black Ops 4 during Operation Apocalypse Z.
