Disturbing atmospheric puzzle well executed! The controls are really simple, so the focus turns towards the puzzle, the environment, and the curiosity to find out what's up. I'd suggest some cues to hint towards locations better, especially less intuitive ones like "back" (the piano/other place suddenly doesnt have one and got me stumped for abit wondering if it's a bug). Otherwise, the stylistic choice of art, sounds, and even the slow fade all contributed really well to the creepy experience. Great job!