The first one is at spawn The second one is found in the bunker to go from generator 2/3 to excavation The third one is located on top of excavation Generator song This song is called Archangel by 'Elena Siegman' and activates by interacting with three 115 crystals. While the video game does add some new elements with upgraded visuals, there are a few Easter Eggs that players can uncover. Musical Easter Eggs Element 115 song. Call of Duty Zombie songs (Easter Egg Songs) Nacht Der Untoten - "Undone" by Kevin Sherwood Nacht Der Untoten - "WTF" by Kevin Sherwood Verruckt - “Lullaby for a Deadman” by Elena Siegman; Shi no Numa - "The One" by Elena Siegman Der Riese - “Beauty Of Annihilation" by Elena Siegman Kino Der Toten - "115" by Elena Siegman Here are all the Easter Eggs …