You go into a creepy mansion and there’s a cloaked figure learning how to play the organ from a YouTube tutorial on their phone. You leave them to it.
I want this to be an Easter egg for speed runners in a video game. You normally find the boss playing the organ if you play for the normal like 20+ hours that you would be required in a standard playthrough, but if you horse tilt noclip through the castle in BK mode you find the boss taking a piano lesson.