Black people had taken part in American popular culture prior to the Civil War era, at least dating back to the African Grove Theatre in New York in the 1820s and the publication of the first music by a black composer, Francis Johnson, in 1818. However, these important milestones still occurred entirely within the conventions of European music. The first extremely popular minstrel song was "Jump Jim Crow" by Thomas "Daddy" Rice, which was first performed in 1832 and was a sensation in London when Rice performed it there in 1836. Rice used a dance that he copied from a stable boy with a tune adopted from an Irish jig. The African elements included the use of the banjo, believed to derive from West African string instruments, and accented and additive rhythms. Many of the songs of the minstrel shows are still remembered today, especially those by Daniel Emmett and Stephen Foster, the latter being, according to David Ewen, "America's first major composer, and one of the world's outstanding writers of songs". Foster's songs were typical of the minstrel era in their unabashed sentimentality, and in their acceptance of slavery. Nevertheless, Foster did more than most songwriters of the period to humanize the blacks he composed about, such as in "Nelly Was a Lady", a plaintive, melancholy song about a black man mourning the loss of his wife.