New Orleans rock ’n’ roll band Vince Vance & the Valiants unveiled its new show at Rock N’ Bowl recently, featuring dazzling costumes, high-flying choreography and a 6-foot head of rocker Vince Vance. New Orleanians are familiar with the shock-haired Vance, who went from Bourbon Street to the White House over the course of a storied career and has made thousands of live appearances around the globe.