From 1906 until 1922 Geraldine Farrar was the Metropolitan Operas most popular and glamorous prima donna. Convinced that music must always serve the drama she often sacrificed tonal beauty to dramatic effect and her acting was noted for its intensity and realism. Nevertheless Farrar was a superb singer possessing a beautiful lyric soprano voice. Farrar was also a star of the silent screen appearing in 14 films from 1915 to 1920. In retirement she was mentor and friend to the African American soprano Camilla Williams enabling Williams to become the first African American to have a regular contract with a major American opera company. This biography and critical analysis of Farrars career provides a detailed account of her major contributions to the history of opera.