Jazz standard and Billy Strayhorn's "Take the 'A' Train" (1941). With the big bands struggling to keep going during World War II, a shift was happening in jazz in favor of smaller groups. Some swing era musicians, such as Louis Jordan, later found popularity in a new kind of music, called "rhythm and blues", that would evolve into rock and roll in the 1950s. Bebop emerged in the early 1940s, with Charlie Parker, Dizzy Gillespie and Thelonious Monk leading the way. It appealed to a more specialized audiences than earlier forms of jazz, with sophisticated harmonies, fast tempos and often virtuoso musicianship.
Australian jazz that lasted from the early 1920s to the 1970s. He was chosen to lead the famous jazz orchestra that was put together for the opening in 1936 of the Sydney Trocadero, which became the city's leading dance venue for the next 35 years, and Coughlan led the orchestra at "The Troc" until its closure in 1971. After the end of World War II Australian jazz began to diverge into two major strands: dixieland or 'traditional jazz' (early jazz) and modern styles like progressive swing, boogie-woogie and bop as exemplified by the music of Charlie Parker and Dizzy Gillespie Graeme Bell