Zac Brown Band and Old Crow Medicine Show appear on the same bill at Merriweather Post Pavilion in Columbia, Maryland, presenting a blend of contemporary country and Americana-rooted folk and bluegrass. The outdoor amphitheater in Symphony Woods provides a scenic, festival-like setting for both bands’ energetic, instrument-driven performances that emphasize storytelling and musicianship. This co-billed concert showcases two prominent touring acts from the country and Americana scenes sharing a single evening of roots-oriented live music.