Post-bop is a jazz style that emerged in the late 1950s, evolving from the earlier bop or bebop movement. It incorporates elements of modal jazz, free jazz, and traditional jazz forms, allowing for greater improvisation and expression. Musicians often use complex harmonies and rhythms, creating a more sophisticated sound. Key figures in post-bop include Miles Davis, John Coltrane, and Herbie Hancock. This genre emphasizes individual creativity while still maintaining a connection to the jazz tradition. Post-bop has influenced many contemporary jazz musicians, contributing to the genre's ongoing evolution and diversity.