Blue Note Records is an American jazz record label owned by Universal Music Group and operated under Capitol Music Group. Established in 1939 by German-Jewish emigrants Alfred Lion and Max Margulis, it derived its name from the blue notes of jazz and the blues. Originally dedicated to recording traditional jazz and small group swing, the label began to switch its attention to modern jazz around 1947. From there, Blue Note grew to become one of the most prolific, influential and respected jazz labels of the mid-20th century, noted for its role in facilitating the development of hard bop, post-bop and avant-garde jazz, as well as for its iconic modernist art direction.

Hard bop is a subgenre of jazz that is an extension of bebop music. Journalists and record companies began using the term in the mid-1950s to describe a new current within jazz that incorporated influences from rhythm and blues, gospel music, and blues, especially in saxophone and piano playing.