Bagatelle (2019)

Woman walks outside dressed only in a slip barefoot. You can see her nipples through the thin fabric. She goes to a creek to bathe. We see her naked back and part of her breasts as she turns sideways. Later, we see her naked back in a reflected mirror. The woman, still naked, is then being played like a cello as a naked (except for his hat) cowboy holds her and runs the bow across her back; this is also as a mirrored reflection.