How to solve the Piano Puzzle in Black Ops 6

Sing that Song, Mr.Piano Man

First, in order to solve the puzzle you have to find the Piano in the back of the house on the first floor. There is a table next to the piano with a black light on it, which is required to solve the puzzle. The light shows the hidden clues located on the piano and around the room.

On the Pianc that is the Russian words for Do Re Mi Fa So La Ti Do are written above each of the keys on the piano. The puzzle is in which order is the player supposed to hit them. Well to find out, you must leave the piano and look around the room.

Starting right above the Piano, you can see 1 MN, and as you follow the arrows around the room you'll find the next 4 keys to hit. The correct order is MN, Pe, CN, AO, then Pe.

Once you complete the sequence, a secret door next to the piano will open up. This secret pathway leads into a secret bunker level in the basement. At the end of the path is an electric door, but you will not be able to go through unless if you have solved the puzzle to turn on the Furance. Check out our complete guide to solving the 'The Puzzles, Mason' achievement here!