How to activate the secret Easter egg song on Shi No Numa in Call of Duty: Vanguard Zombies

gamepur.com:

Treyarch loves to incorporate secret songs into their Zombies maps for players to find. Activating them can add to the atmosphere of undead slaying as you fight for survival into the higher rounds. As is tradition, there is an Easter egg song on Shi No Numa in Call of Duty: Vanguard. Here is how to play it.

Related: How to craft the Wunderwaffe DG-2 wonder weapon in Shi No Numa in Call of Duty: Vanguard Zombies

Usually, to unlock an Easter egg song in Call of Duty Zombies, you have to find three items hidden around the map. That is not the case with Shi No Numa in Vanguard. All you need to do is make your way to the Comm Room. You can find it by going down the stairs in the spawn room and following the door that says Comm Room above it.

When you get inside, go to the room on the right and find this black telephone.

Interact with it, and you will hear a dial tone before your Operator begins dialing a number. When that process ends, an instrumental version of “The One” will begin playing. In our experience, the song was kind of quiet, so you may want to adjust your in-game volume settings to hear it properly.

As of this writing, this is the only secret song we have found on Shi No Numa. We will surely link to a different article here if there is another.