The most representative period is between 1949 and 1954.
The microgroove long playing record (LP) improves sound reproduction.
Duke Ellington takes the opportunity to present an extended arrangement of Mood Indigo.

Chesney Henry “Chet” Baker Jr. “Prince of Cool” was an American jazz trumpeter and vocalist known for major innovations in cool jazz.

Birth of the Cool is a compilation album by Miles Davis, released in February 1957 by Capitol Records.
It compiles tracks recorded by Davis’s nonet for the label over the course of three sessions during 1949 and 1950.