"In this Jan. 15, 2013 file photo, Country singer and actor Tim McGraw poses for a portrait, in Nashville, Tenn. ""ACM Presents: Tim McGraw's Superstar Summer Night,"" taped a day after the ACM Awards last month in Las Vegas, will air Sunday, May 19, at 9 p.m. EST on CBS. (Photo by Donn Jones/Invision/AP, file)"