here’s the H1 one
https://youtu.be/eeFVHf95Q8A?si=fOpUoeBNcxU_McgR
and here’s the K1 one
https://youtu.be/WUtOxZSg4Ho?si=xbsWdhS4NdxWHbdq
it also appears in another song but you haven’t reached that song yet so it would be spoilers if I told you which song

1 what
2 ohhhhh

EATEOT H1
it’s also in K1 but slower

I think so

I’m pretty sure you’ve heard that sound pretty recently but just faster