A country and gospel quartet, The Oak Ridge Boys have been entertaining Kentucky State Fair audiences for 44 years. The group has scored 12 gold, three platinum and one double platinum album; earned Grammy, Country Music Association and Academy of Country Music Awards; and were recently inducted into the Country Music Hall of Fame. www.oakridgeboys.com

Best known for his patriotic song "God Bless the U.S.A." Lee Greenwood is an accomplished country music artist. He has released more than 20 major-label albums and charted more than 25 singles on the Billboard country music charts. His No. 1 hits include “Somebody’s Gonna Love You,” “Going, Going, Gone” and “Dixie Road.” www.leegreenwood.com