In the new room, the floor was solid wood, smooth and polished. Two walls were mostly windows, huge panes set in to the cottage’s masonry, looking out over the Thames past the meadow. The third wall, minus the archway that led to the kitchen, was entirely taken over by an intricate Muggle sound system—large speakers of varying sizes, and wires cabled together in an organized fashion—plus a shelf, tall and narrow, filled with music discs.