Fortunately, as she begins to explore, the music steadily becomes louder so it'll become easier to follow. And unlike the cold foyer, where the black and white differ between decor and keys was just how the music was being played. It's a soft piece, but the articulation, gentle swells, and rising and descending dynamics ring down the hall with such care.

Sounded like it was coming from one gray door in particular in the hallway.