LADY ANTEBELLUM A multiplatinum trio keeps it country while reaching for the stars Lady Gaga’s outlandish outfits may have been the talk of the Grammy Awards earlier this year, but she was upstaged that night by another Lady: Lady Antebellum. The country trio walked away with five trophies on the strength of its triple-platinum second album, Need You Now. “It was the first time for us to be recognized at that level,” says guitarist and pianist...