Smooth jazz is a radio format that includes songs by artists such as George Benson, Pat Metheny, Kenny G, Luther Vandross, Sade, Robin Thicke, Anita Baker, Basia, Dave Koz and Chuck Mangione. It began in the 1980s as "adult alternative" or NAC (New Age Contemporary or New Adult Contemporary), a well-defined radio format, with jazz, new-age music and adult contemporary music. In the 1990s, the format became much more jazz-oriented, with very little new-age, and emphasizing young artists.
Around 2007, the format became less popular; it was abandoned by several high-profile radio stations across the United States, including WQCD (now WFAN-FM) in New York, WNUA Chicago (now WCHI-FM), WJJZ in Philadelphia (now WUMR), and KKSF (now KOSF) in San Francisco. Programmers say the audience for the format has aged beyond the prime demographic sought by advertisers. Despite the format's demise outside a handful of commercial radio outlets, a number of non-commercial and HD stations have taken up the music. It is still available on SiriusXM on Channel 66, known as "Watercolors" and on the Music Choice cable radio service. In addition, smooth jazz concerts, recording sales, as well as increased smooth jazz offerings on the Internet, continue to show strong fan support for the genre.[1]