Smooth jazz is a genre of music that grew out of jazz fusion

Jazz fusion

Jazz fusion is a musical fusion genre that developed from mixing funk and R&B rhythms and the amplification and electronic effects of rock, complex time signatures derived from non-Western music and extended, typically instrumental compositions with a jazz approach to lengthy group improvisations,...

 and is influenced by R&B

Contemporary R&B

Contemporary R&B is a music genre that combines elements of hip hop, soul, R&B and funk.Although the abbreviation “R&B” originates from traditional rhythm and blues music, today the term R&B is most often used to describe a style of African American music originating after the demise of disco in...

, funk

Funk

Funk is a music genre that originated in the mid-late 1960s when African American musicians blended soul music, jazz and R&B into a rhythmic, danceable new form of music. Funk de-emphasizes melody and harmony and brings a strong rhythmic groove of electric bass and drums to the foreground...

, rock

Rock music

Rock music is a genre of popular music that developed during and after the 1960s, particularly in the United Kingdom and the United States. It has its roots in 1940s and 1950s rock and roll, itself heavily influenced by rhythm and blues and country music...

, and pop

Pop music

Pop music is usually understood to be commercially recorded music, often oriented toward a youth market, usually consisting of relatively short, simple songs utilizing technological innovations to produce new variations on existing themes.- Definitions :David Hatch and Stephen Millward define pop...

 music styles (separately, or, in any combination).

Modern derivatives of the genre include the more-recent New Adult Contemporary format of broadcast radio. "Smooth jazz" has been successful as a radio format

Radio format

A radio format or programming format not to be confused with broadcast programming describes the overall content broadcast on a radio station. Radio formats are frequently employed as a marketing tool, and constantly evolve...

; however, in 2007, the popularity of the format began to slide. Consequently, it was abandoned by several high-profile radio stations across the U.S.A., perhaps most notably by WQCD (now WEMP) in New York and KKSF

KKSF

KKSF, known as "Oldies 103.7", is a classic hits radio station in San Francisco, California. The station is owned and operated by Clear Channel Communications.-History:...

 in San Francisco.