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.
Charlie Christian was inducted in 1990 into the Rock and Roll Hall of Fame. Christian's exposure was so great in the brief period he played with Goodman that he influenced not only guitarists but other musicians as well. The influence he had on "Dizzy" Gillespie, Charlie Parker, Thelonious Monk and Don Byas can be heard on their early bop recordings "Blue 'n' Boogie" and "Salt Peanuts". Other musicians, such as the trumpeter Miles Davis, cited Christian as an early influence. Indeed, Christian's "new" sound influenced jazz as a whole. He reigned supreme in the jazz guitar polls up to two years after