Tim McGraw, 7 p.m. Aug. 29: After two decades as a country music powerhouse, Tim McGraw continues to add to his more than 40 million albums sold, 35 No. 1 hit singles and major film roles. His latest album is "Sundown Heaven Town." McGraw performed at the Allentown Fair in 1999, 2005 and 2009. In his first appearance, his late father, Philadelphia Phillies baseball team pitcher-reliever Tug McGraw, joined him on stage. McGraw's film acting credits include "The Blind Side," "Country Strong" and "Friday Night Lights" Jana Kramer, former "One Tree Hill" TV show star, opens the show.