Kenny Chesney, the Zac Brown Band and The Band Perry will take part in a free concert series for NBC's Today this summer. Chesney will appear at Rockefeller Center on June 22 while the Zac Brown Band will perform on July 13. The Band Perry will be the season's first country artist with their June 1 appearance. Others booked for the series include Usher, Pitbull, the American Idol winner and runner-up, Chris Brown, Justin Bieber, Maroon 5, Flo Rida, Hot Chelle Rae, Train and Jason Mraz with special guest Christina Perri.