COD BO3 Gorod Krovi Hidden Song

First Location, Department Store After Spawn. Once you open first door, Right in front of you there is a couch. Look on the end corner and there is a Vodka Bottle. Activate that and thats the first.

Second Location, Operation Bunker. Its on the open area where you will see a truck. Go near that and look for a boxes.

Third Location, Supply Depot. This time, We have to look on shelvings. Just look for a Vodka Bottle and thats the final.

Note: You will hear a chime if you did it correctly. This can be done in any order and can be played once in every gameplay.