A beautiful story of how how a song written in 1902 links people over time: the original songwriter, sick of the hacky love songs from which he makes his living and wanting to include something about the wonders of the universe; the singer who, as a young girl, is entranced by the mystery and makes it her signature song as a performer; a young girl having built a crystal radio set and picking up the ethereal strains over the airwaves, in amongst short-wave broadcasts from around the world; a crewmember on a generation starship leaving an Earth made uninhabitable by climate change, wishing she had a copy of the song her mother used to sing to and thinking of it flying ahead of them, along with all the other broadcasts, perhaps to be picked up by some distance intelligence. ( )