Miranda Lambert, 7:30 p.m. Aug. 30, Fairgrounds Grandstand, Allentown Fair. Lambert performed at the Fair in 2006. The Allentown Fair concert is the first stop on Lambert's “Roadside Bars and Pink Guitars Tour.” Lambert, born in Longview, Tex. released her debut album, ”Kerosene” (2005), which sold one million copies in the United States and had the singles, “Me and Charlie Talking,” “Bring Me