George Ezra is a sightseer. If Ezra’s radio hit “Budapest” doesn’t give that away on its own, his debut album, Wanted On Voyage, also has a tune called “Barcelona.” The album was written following a train tour of Europe. And although the singer-songwriter, who headlines the Fillmore on April 9, already made his way through the United States last winter while opening for fellow Brit Sam Smith, he admits to feeling bad about missing out on exploration in favor of promotional work and gigs. Now that he’s coming back to San Francisco as a headliner, he plans to pause to [...]