Dixieland all of the recorded repertoire of New Orleans musicians was from the period when the format was already evolving beyond the traditional New Orleans format. "Dixieland" may in that sense be regarded as denoting the jazz revival movement of the late 1930s to the 1950s as much as any particular subgenre of jazz. The essential elements that were accepted as within the style were the traditional front lines consisting of trumpets, trombones, and clarinets, and ensemble improvisation over a 2-beat rhythm. The Dixieland revival renewed the audience for musicians who had continued to play in traditional jazz styles and revived
Jazz recordings featuring "jazz" in the title or band name, but most were ragtime or novelty records rather than jazz. In February 1918 during World War I, James Reese Europe's "Hellfighters" infantry band took ragtime to Europe, then on their return recorded Dixieland standards including "Darktown Strutters' Ball". In the northeastern United States, a "hot" style of playing ragtime had developed, notably James Reese Europe's symphonic Clef Club orchestra in New York City, which played a benefit concert at Carnegie Hall in 1912. The Baltimore rag style of Eubie Blake influenced James P. Johnson's development of stride piano playing, in which