During World War II musicians like the Gypsy guitarist Django Reinhardt continue to play despite a Nazi ban, jazz is a beacon of hope. Bandleaders like Glenn Miller and Artie Shaw enlist, and take their swing to the troops overseas. Segregated at home and in uniform, black Americans find themselves fighting for liberties their own country denies them, as authorities padlock the Savoy Ballroom to keep servicemen off its integrated dance floor. Duke Ellington sells war bond,and is helped now by the gifted young composer Billy Strayhorn. In a Harlem club called Minton's Playhouse, a small band of young musicians, led by the trumpet virtuoso Dizzy Gillespie and the brilliant saxophonist Charlie Parker, has discovered a new way of playing - fast, intricate, exhilarating, and sometimes chaotic. Parker and Gillespie record the tune called Ko Ko, the sound will soon be called "bebop," and jazz will never be the same. Produced by Ken Burns. .