The French singer Françoise Hardy, whose crystalline voice and melancholy lyrics shot her to international stardom in the 1960s, has died at the age of 80, according to her son. Thomas Dutronc, Hardy's son with another French music star, Jacques Dutronc, announced her death on Tuesday. "Mom is gone," he wrote on Instagram on Tuesday alongside a baby picture of himself with his mother. Hardy became a pop icon and fashion muse of the 1960s and beyond. Mick Jagger described her as his "ideal woman", Bob Dylan wrote a poem for her, and women around the world imitated her androgynous...