Johnson. He also played with Dizzy Gillespie and Charlie Parker. With Parker and his band, Davis' signature of smooth, cool jazz was developing. He eventually left the group after Parker had a nervous breakdown and there was too much infighting among the group members (Crisp 67). Davis met Gil Evans and the two, along with an unusual assortment of musicians, began producing music that was the opposite of bebop. Instead, the sound was very smooth and tried to capture the essence of the human voice. The group was granted several months of studio time by Capitol Records. A few years later, the material was released as an album entitled Birth of the Cool and cool jazz was born (Crisp 72). This unique sound would change the sound of jazz in the following decades, the album has been re-released several times over the years and is considered a classic (Zwerin and