Growing up, all Florian Cloud de Bounevialle Armstrong wanted was to be normal. Her parents didn’t allow television or visitors to the house; her mother, a poet, put rye bread in her packed lunches; her father published books about military history. And she hated her name. She wished she were named Chloe, and once told kids she met playing around the corner that she was named Clare. The gambit worked, until her mum—named, incidentally, Clare—arrived and started asking for her daughter, using the quirky, Virgil-inspired nickname she’d had her whole life: “Where’s Dido?” As if out of spite, Dido became the most normal pop star in the world. On the cover of her second album, 2003’s Life for Rent , she is pictured wearing a sensible jacket to match her sensible long bob and her sensible-sounding music, smiling to herself like the model that comes with the picture frame.…