Bebop, e.g. is a type of JAZZ music that originated in the 1940s and 1950s. It is characterized by fast tempos, improvisation, and complex chord progressions. BEBOP is often considered to be the first modern JAZZ style, and it has had a lasting influence on JAZZ music. The term 'BEBOP' is derived from the phrase 'bop-bop-bop, ' which was used to describe the sound of the music. BEBOP is often associated with artists such as Charlie Parker, Dizzy Gillespie, and Thelonious Monk.