SPOILERS FOR DELTARUNE CH. 3!!! If you haven't played it yet, beware!
So, I was exploring that hidden Zelda part where Kris plays alone and gets the sword. I really loved music there. When you start, it's nothing but ocean (?) sounds. There are weird Asriel-like enemies and flowers phasing through you like ghosts. It really feels like it's not something you're supposed to see.
Then you find the sword. The enemies become tangible and you can cut them down, and actual music starts playing. It has these ocean sounds at the beginning and end still, but it's way less unsettling now. You explore and level up your weapon until you hit the max level. You can cut down trees now! You keep waiting for the music to start, but it's stuck on ocean sounds now.
You wander through the screens devoid of enemies. You cut the trees and break barriers between the screens. You get lost in the sea of trees until you find a chest. All while music never starts