A stranger hurrying as fast as he could over the icy sidewalks looked in. He saw a circle of singing people bathed in the clean white light from a tree, and his heart did a somersault, and the image stayed with him; it merged with him even as he came home to his own children, who were already sleeping in their beds, to his wife crossly putting together the tricycle without the screwdriver that he’d run out to borrow. It remained long after his children ripped open their gifts and abandoned their toys in puddles of paper and grew too old for them and left their house and parents and childhoods, so that he and his wife gaped at each other in bewilderment as to how it had happened so terribly swiftly. All those years, the singers in the soft light in the basement apartment crystallized in his mind, became the very idea of what happiness should look like.