He sometimes performed in blackface makeup. This was a theatrical convention in the mid-19th century. With his unique and dynamic style of singing black music, like jazz and blues, he was later credited with single-handedly introducing African-American music to white audiences. As early as 1911 he became known for fighting against anti-black discrimination on Broadway. Jolson's well-known theatrics and his promotion of equality on Broadway helped pave the way for many black performers, playwrights, and songwriters, including Cab Calloway, Louis Armstrong, Duke Ellington, Fats Waller, and Ethel Waters.