Starfish Tango

A man explains how he was obsessed when he was younger by a mysterious room and an extraordinary rarefied piano music that drifted through its open window during the night. Forty years later, returning to his home town after having spent most of his life abroad, in "a bunch of different places", he asks one of his friends to rent a room for him. As chance would have it, it turns out to be the same room which attracted him when he was a young man. What drew him again to this room?