On September 29, bebop comes to Carnegie Hall for the first time when Dizzy Gillespie and Ella Fitzgerald make their Carnegie Hall debuts before a sold-out house. Charlie Parker also joins Gillespie for an all-too-rare reunion of their groundbreaking quintet.

The frenetic energy of bebop was a radical departure from swing and sparked open hostility in some musical circles. According to the great Duke Ellington, though, the revolution was inevitable. “Why should music stand still?” wrote Ellington in the concert program. “Nothing else stands still … Music is now in skilled hands.”

Next entry: 1947 Ernest Tubb and Grand Ole Opry stars perform