Members of the Marching Hundred sousaphone section play in the concert arch Nov. 8, 2021. The band sets up in the concert arch at least 15 minutes every practice. “The concert arches we make are the easiest way to rehearse music with the full ensemble. Each arch is arranged by instrument,” Boden said. This helps the staff hear each instrument section more clearly than they can while practicing drill. Weston Kilgore