The Kell's Fall organ puzzle is one of the more mysterious parts of Destiny 2's new exotic mission. You discover this elaborate piano not long after entering the Kell's fortress, but you won't be able to enter any melodies until you finish the mission and grab the Slayer's Fang exotic. Once that's done, you'll be able to use this organ to unlock the Nightsworn Sight intrinsic upgrades and some fun easter eggs...
Read more.
All Kell's Fall organ puzzle codes in Destiny 2
Source: PC Gamer (opens in a new tab)