Grammy® Award-winning country music singer, songwriter and Kentucky native Carly Pearce will sing the National Anthem at this year's GI Kentucky Derby, which will be contested for the 149th time on May 6, Churchill Downs announced Tuesday. Also, singer and songwriter Rachel Platten will kick off Derby weekend by performing the National Anthem and her hit "Fight Song" during the Kentucky Oaks Survivor's Parade at the GI Longines Kentucky Oaks May 5. "Carly Pearce has been taking the country music world by storm with an impressive year of musical performances,"...