Zac Brown Band Book Country Jam in Wisconsin

Zac Brown Band has booked its first appearance at the Country Jam festival in Eau Claire, Wis. The band will conclude the three-day festival, held July 21-23, with a jam session-styled set. Blake Shelton will headline the festival on the opening night, and Miranda Lambert Martina McBride will lead the lineup on the middle night. Festival organizers have estimated attendance at 20,000 people a day. Tickets are now on sale, with prices beginning at $49 a day or $99 for all three days.