No one mixes fury and vulnerability, ferocious energy and pop smarts like Bob Mould. His 15th solo album, Here We Go Crazy, comes out March 7, and he remains at the peak of his powers. Here he reflects on his tremendous, sometimes turbulent career, starting with his attending Macalester College in St. Paul, Minn., meeting Grant Hart at Cheapo Records and launching the trailblazing punk trio Hüsker Dü. Why have the Twin Cities punched above their weight musically? Given his triumphs with Hüsker Dü, Sugar and the lineup on his most recent six albums, what does he like about playing in trios? How did “bright melody, dark story” become such a potent combination? How does he enjoy performing solo vs. with a band? Did he always envision Here We Go Crazy as a three-act song cycle? And what’s his strategy to address what’s happening in the world now?