1940s in jazz of the time initially met with a divided, sometimes hostile response among fans and fellow musicians, especially established swing players, who bristled at the new harmonic sounds. To hostile critics, bebop seemed to be filled with "racing, nervous phrases". Despite the initial friction, by the 1950s bebop had become an accepted part of the jazz vocabulary. The most influential bebop musicians included saxophonist Charlie Parker, pianists Bud Powell and Thelonious Monk, trumpeters Dizzy Gillespie and Clifford Brown, and drummer Max Roach. The swing era lasted until the mid-1940s, and produced popular tunes such as Duke Ellington's "Cotton Tail" (1940) and
American Jazz Museum American Jazz Museum The American Jazz Museum is a jazz museum in the historic 18th and Vine district of Kansas City, Missouri. The museum preserves the history of American jazz music, with exhibits on Charlie Parker, Duke Ellington, Louis Armstrong, Ella Fitzgerald and others. Nested within the museum is a fully functioning jazz club, The Blue Room, which holds live performances multiple nights a week. One of the significant items on display is the Graphon alto saxophone played by Charlie Parker at the famous January, 1953 Massey Hall concert in Montreal with Max Roach, Dizzy Gillespie, Charles Mingus and Bud