Crickets
It's no good... the door, it's solid steel...
Susie, Chapter 3
Crickets is the 31st track of the DELTARUNE Chapters 3+4 OST. It plays as the last track of Chapter 3, when Kris and Susie find the digital lock sealing the doors of the shelter after unsuccessfully chasing the Knight, and in Chapter 5 when Susie goes back to the closet Dark World at the end of the Chapter.
snd_crowd_crickets, the sound effect that plays when the crowd goes silent in certain moments of Chapter 3, uses the same crickets sound as Crickets.