Dixieland jazz is a form of jazz which arose in the 1920s in Chicago. Musicians there were trying to revive authentic, classic New Orleans jazz. By the 1940s, Dixieland revival musicians like Jimmy McPartland, Eddie Condon and Bud Freeman had become well-known and established their own unique style. Most characteristically, players entered solos against riffing by other horns, and were followed by a closing with the drummer playing a four-bar tag that was then answered by the rest of the band.