Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Hard bop is a style of jazz that is an extension of bebop (or "bop") music. Hard bop incorporates influences from rhythm and blues, gospel music, and blues, especially in the saxophone and piano playing. David H. Rosenthal also contends in his book Hard Bop that it is to a large degree the natural creation of a generation of black American musicians who grew up at a time when bop and rhythm and blues were the dominant forms of black American music and prominent jazz musicians like Tadd Dameron worked in both genres. Another major influence in this genre was Miles Davis.