Guitarist Andy Guerrero started his first band while still in high school, and he got his first taste of the rock-and-roll hustle by encouraging friends—including aspiring rappers Stephen Brackett and Jamie Laurie—to see his band’s early gigs. These days, Guerrero, Brackett and Laurie are better known by their Flobots names, Andy Rok, Brer Rabbit and Jonny 5. Along with Mackenzie Gault, Jesse Walker and Kenny Ortiz, the group has turned its musical prowess into a wildly popular hip-hop band. When they’re not onstage, they’re building a Denver nonprofit designed to channel their fame and good fortune into grassroots organizing.