When you have a lit fire pit in your home and have low sanity, sometimes shadow hands try to extinguish the fire. However, they can't enter the house, so their music continously plays and you can't get rid of them by walking on them.
It's hard to see in the screenshot because the hands and background are black but look at the fire pit and you can see a little hand trying to get in.
Steps to Reproduce
Put down a fire pit in home, have low sanity, get hands to spawn.
Put down a fire pit in home, have low sanity, get hands to spawn.