Saturday night, six o’clock on the nose. Emma turns on the radio—her favorite show, her favorite station, always a Frank Sinatra number at the top of the playlist. She relishes the element of surprise, the musical finesse it takes to segue from torch songs to golden oldies that render her a teenager sunning on the beach. Nobody used sunblock back then. Sunburn let you know summer had arrived. Noxzema got you through the pain . . .