Read this story in the 1970's, probably in a "best of" collection.
A guy hears strange noises in his house/apartment, thinks it's maybe ghosts. Comes to realize he's hearing a tour guide (from the future? alien?) who is telling the tour group about various items in the room and how they relate to contemporary Earth life and customs. But everything is (humorously) all wrong. In particular, I recall, he points out a saxophone and says that it was for use in religious ceremonies.