Trad jazz, short for "traditional jazz", refers to the Dixieland and ragtime jazz styles of the early 20th century, which typically used a front line of trumpet, clarinet and trombone in contrast to more modern styles which usually include saxophones, and the revival of these styles in mid 20th-century Britain before the emergence of beat music.
A Dixieland revival began in the United States on the West Coast in the late 1930s as a backlash to the Chicago style, which was close to swing. Lu Watters and the Yerba Buena Jazz Band, and trombonist Turk Murphy, adopted the repertoire of Joe "King" Oliver, Jelly Roll Morton, Louis Armstrong and W. C. Handy: bands included banjo and tuba in the rhythm sections. A New Orleans-based traditional revival began with the later recordings of Jelly-Roll Morton and the rediscovery of Bunk Johnson in 1942, leading to the founding of Preservation Hall in the French Quarter during the 1960s.
Early King Oliver pieces exemplify this style of hot jazz; however, as individual performers began stepping to the front as soloists, a new form of music emerged. One of the ensemble players in King Oliver's Creole Jazz Band, Louis Armstrong, was by far the most influential of the soloists, creating, in his wake, a demand for this "new" style of jazz, in the late 1920s and early 1930s. Other influential stylists who are still revered in traditional jazz circles today include Sidney Bechet, Bix Beiderbecke, Wingy Manone and Muggsy Spanier. Many artists of the big band era, including Glenn Miller, Gene Krupa and Benny Goodman, had their beginnings in trad jazz.