Keith Urban and Trace Adkins are among the artists performing at Country Concert, a music festival taking place this weekend in Fort Laramie, Ohio. The three-day event began Thursday (July 8). Urban will headline Saturday night's (July 10) show, joined by Jo Dee Messina, Randy Houser, Joe Diffie, Justin Moore and the Bellamy Brothers. Adkins will top Friday night's (July 9) lineup, following Billy Currington, David Nail, Colt Ford and Steel Magnolia. Hank Williams Jr. led the Thursday night roster, sharing the bill with Gary Allan, Joe Nichols and The Band Perry. The festival is celebrating its 30th anniversary this year.