In his early 50s, after a long hiatus, the country singer has a new album and is touring. "Music keeps you eternally young," he says. "It just does." Daniel Boczarski/Getty Images hide caption

itoggle caption Daniel Boczarski/Getty Images

"I just sort of screamed into a microphone for ages," the British pop singer Charli XCX says of the time leading up to Sucker. Bella Howard/Courtesy of the artist hide caption

itoggle caption Bella Howard/Courtesy of the artist