Mary Willie Grace Moore was an American operatic lyric soprano and actress in musical theatre and film. She was nicknamed the "Tennessee Nightingale." Her films helped to popularize opera by bringing it to a larger audience. She was nominated for the Academy Award for Best Actress for her performance in One Night of Love.

One Night of Love is a 1934 American Columbia Pictures romantic musical film set in the opera world, starring Grace Moore and Tullio Carminati. The film was directed by Victor Schertzinger and adapted from the story Don't Fall in Love, by Charles Beahan and Dorothy Speare.