Foreign operas were popular among the upper-class throughout the 19th century, while other styles of musical theater included operettas, ballad operas and the opera pouffe. The English operettas of Gilbert and Sullivan were particularly popular, while American compositions had trouble finding an audience. George M. Cohan was the first notable American composer of musical theater, and the first to move away from the operetta, and is also notable for using the language of the vernacular in his work. By the beginning of the 20th century, however, black playwrights, composers and musicians were having a profound effect on musical theater, beginning with the works of Will Marion Cook, James Reese Europe and James P. Johnson; the first major hit black musical was "Shuffle Along" in 1921.