"Miles Davis - Birth of the Cool" is a seminal jazz album released in 1957 by American jazz musician Miles Davis. The album was recorded over a series of sessions in 1949 and 1950 and features arrangements by Gil Evans and Gerry Mulligan, among others. It is considered a landmark in the development of cool jazz, which is characterized by a more restrained and relaxed sound than bebop. The album features a nonet consisting of a trumpet, trombone, French horn, tuba, alto and baritone saxophones, piano, bass, and drums. The songs on the album are known for their melodic and harmonic sophistication, with a focus on improvisation and collaboration between the musicians. The album received critical acclaim upon its release and has since become recognized as one of the most important jazz albums of all time.