Columbia, MDs Merriweather Post Pavilion will host the Route 29 Revue on August 16. The day-long event will feature a mix of bluegrass/folk, country and rock musicians, including event co-headliners Old Crowe Medicine Show and Levon Helm. In addition, the mini-festival will boast performances by Iron and Wine, Grace Potter and the Nocturnals, The Felice Brothers and Justin Jones. The festivals gates will open at 2:30 PM.