Lady Antebellum, Zac Brown Band, Kacey Musgraves and Cole Swindell close out the March Madness Music Fest in an epic, all-day country rock show. Many of these artists would sell out major venues individually. Together, this is just a massive, massive show. Make sure you show up early to stake out your space. Gates open at 2 p.m.; Swindell goes on at 2:45 p.m. As with the rest of the March Madness Music Fest shows, this is free, all-ages and unticketed.