7 p.m. Aug. 29, Fairgrounds Grandstand, Allentown Fair. You know him from "The Voice," the NBC reality TV talent show where he is a vocal coach along with Adam Levine, Christina Aguilera and Cee Lo Green. You should know him from his decade of hits, from "Austin" (2001), to "Home" (2008), to "God Gave Me You" and "Honey Bee" (both 2011), among his 17 country chart singles and 11 No. 1 singles. Shelton, born Blake Tollison Shelton, June 18, 1976, Ada, Okla., and his wife, country singer Miranda Lambert, opened Super Bowl XLVI in February with a duet of "American the Beautiful." Sunny Sweeney opens the Fair concert.