CONTRIBUTED PHOTOLady Antebellum, 7 p.m. Aug. 4, Wind Creek Steel Stage, Musikfest. Since teaming up in 2006, Hillary Scott, Charles Kelley and Dave Haywood have sold more than 18 million albums worldwide, charted nine No. 1 hits on the country chart and received seven Grammy Awards. The trio rose to stardom with the hits “I Run to You” and “Love Don't Live Here” from its self-titled debut, and