When I was a teenager I had a few really bizarre experiences in the house we lived in at the time. It was around 115–120 years old and there had been at least 2 people who died in the house, I know this for a fact because the home had been owned by my grandparents for 2 generations, my great grandparents didnt buy the house brand new but they were the 2nd owners and my grandparents are the current owners, my grandpa wasnt born yet when they bought it so its possible the original owners died in it also I guess. Anyways, in the front bedroom there was a piano and we usually kept the door shut to keep the cats off of the piano, one night it was really late and I started hearing the piano, it wasnt a song, mostly just repetitive lower keys being pushed down pretty hard, thinking it was the cats I went to go shoo them from the room and when I got about 10–15 ft from the door I noticed one of my cats was watching the door to the piano room, I didn’t think anything of it at first until my other cat came out from under the table in the dining room. This made me stop in my tracks because I only have 2 cats and both of them were now staring at the closed door to the piano room. Piano keys were still being hit the entire time this was going on, so I walked up and opened the door to see what the fuck it was and there was no one in the room, both windows were shut and locked.
I was so freaked out I slammed the door and ran to the back of the house. Lmfao, the same thing happened a few times over the years we lived there, a friend who lived with me for a few months even witnessed it, never figured out what it was though. In the 7 years we lived in that house I we never saw a single mouse or rat at all. It was just fucking weird.