Smooth jazz was a popular radio format that included 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. Early history Smooth jazz as a radio format has its roots in the construction of what were once called "beautiful music" stations, which generally played fifteen-minute sets consisting of instrumentals bookending a vocal song or two. The incubators of the format were specialty shows at night or on the weekends, in places such as Atlanta (WQXI-FM and WVEE-FM), Miami (WWWL-FM) and San Antonio (KTFM). The first jazz radio station to attempt to reach an audience beyond hardcore jazz fans full-time was New York's WRVR-FM, which was acquired by Sonderling Broadcasting in 1976. Under its new management, WRVR more than tripled its audience by emphasizing artists like George Benson and Pat Metheny that were crossing over to more popular formats. Other early pioneers included WLOQ in Orlando, Florida (which began programming such a format in 1977), Russ Davis in Atlanta and "Jazz Flavours", Al Winters and "The Quiet Storm", Ross Block, Dave Caprita and Stu Grant at Love 94FM with "Sunday Morning Jazz" in Miami and Art Good at KIFM San Diego with "Lights Out San Diego". In 1983, "adult alternative" became a well-defined radio format, with jazz, new-age music and adult contemporary music. In