"Cool Blues" is an original blues composition by Charlie Parker, written in 1947 shortly after his release from Camarillo State Mental Hospital in California. The tune was created for a Dial Records session recorded on February 1, 1947, in Hollywood, marking Parker's return to peak creative form after months of treatment following a period of severe personal crisis. The melody is a straightforward yet distinctive bebop blues, featuring Parker's signature angular phrasing and blues-inflected lines over a standard twelve-bar blues progression. Its relaxed, swinging character sets it apart from Parker's faster and more harmonically complex works, making it one of his most accessible vehicles for improvisation. The original recording features Parker on alto saxophone alongside Miles Davis on trumpet and Erroll Garner on piano, and it was released on Dial Records. Within Parker's catalog, "Cool Blues" stands alongside other blues-rooted compositions like "Now's the Time" and "Billie's Bounce" as examples of his ability to blend traditional blues language with the revolutionary vocabulary of bebop, including chromaticism, rhythmic syncopation, and upper chord extensions. The tune has been covered by artists including Sonny Stitt and Grant Green, who brought soul-jazz and organ-trio interpretations to the piece. It remains a recognized bebop blues staple, frequently performed in small-group settings and valued by players for its improvisational potential.