Bop is a fast-paced jazz style that originated in the 1940s. It is characterized by improvisation, complex chord progressions, and syncopated rhythms. BOP was developed by musicians such as Dizzy Gillespie, Charlie Parker, and Thelonious Monk, who sought to create a more modern sound than traditional jazz. BOP has since become one of the most influential jazz styles, inspiring many other genres of music.