Stephen Foster's compositions form an early songbook of American music. He became a full-time songwriter in 1841. His themes often centered around the twin themes of balladry and minstrelry, the latter extolling the imaginary joys of life in the deep south under the shadow of slavery, iconic songs like "Old Uncle Ned" and "O Susannah." In 1850, he had a banner year, publishing "Nelly Bly" and "Camptown Races," the latter a campaign theme for Abraham Lincoln. When the Civil War broke out, Foster's songs about slaves' idyllic lives fell understandably out of favor, although wistful ballads like "Beautiful Dreamer" retained their popularity. Despite the wealth of his musical contribution, Foster died penniless in New York in 1864 at age 37.