The Ultimate Country Girl Duet Carrie Underwood and Jennifer Nettles do “9 to 5″GwenGwenPublished: June 22, 2014Share on FacebookShare on TwitterCarrie Underwood and Jennifer Nettles were recently at the Grand Ole Opry and teamed up for a rendition of Dolly Parton's "9 to 5." These two ladies are power houses!