Stelth Ulvang has spent the last seven years performing with the Denver band The Lumineers. That’s taken him on worldwide tours where he’s played to hundreds of thousands of fans and shared the stage with U2 and the late Tom Petty. Still, the Fort Collins native tells Colorado Matters he somehow finds time to write and record his own music. And there’s a lot of it. He’s put out two records so far this year, and he’ll release a third Friday called “American Boredom.”