"Jazz A to Z" is a comprehensive guide featuring 48 pioneering jazz musicians, including Louis Armstrong, Miles Davis, and Charlie Parker. Each entry provides insights into the artist's life, style, significance, best recordings, and the type of jazz they played, with additional context. The book covers various jazz styles from New Orleans to free bop, featuring vivid black and white portraits. Written in an engaging and accessible style, it serves as an authoritative reference for jazz enthusiasts and newcomers alike, offering valuable insights into the genre's originators and innovators.