Imagine Dragons finds success takes some getting used to   Sudden fame can be a double-edged sword. Just ask Imagine Dragons’ frontman Dan Reynolds. “It sounds cliché,” he says, “but I never got into rock ’n’ roll for fame or drugs or girls. For me, rock ’n’ roll was about people doing what they wanted to do and saying what they wanted to say. I’m hardly a typical rock star. I have a wife and a 2-year-old daughter, and I love...