Contemporary hit radio

Contemporary hit radio (CHR, also known as contemporary hits, hit list, current hits, hit music, top 40, or pop radio) is a radio format common in many countries that focuses on playing current and recurrent popular music as determined by the Top 40 music charts. There are several subcategories, dominantly focusing on rock, pop, or urban music. Used alone, CHR most often refers to the CHR-pop format. The term contemporary hit radio was coined in the early 1980s by Radio & Records magazine to designate Top 40 stations which continued to play hits from all musical genres as pop music splintered into adult contemporary, urban contemporary, contemporary Christian and other formats.

The term "top 40" is also used to refer to the actual list of hit songs, and, by extension, to refer to pop music in general. The term has also been modified to describe top 50; top 30; top 20; top 10; hot 100 (each with its number of songs) and hot hits radio formats, but carrying more or less the same meaning and having the same creative point of origin with Todd Storz as further refined by Gordon McLendon as well as Bill Drake. The format became especially popular in the mid-sixties as radio stations constrained disc jockeys to numbered play lists in the wake of the payola scandal.

Also known as CHR/pop or teen CHR. Plays pop, and dance, and sometimes urban, alternative, rock, and country crossover as well. Often referred as "Top 40"; in terms of incorporating a variety of genres of music, CHR/pop is the successor to the original concept of top 40 radio which originated in the 1950s. Examples of CHR/pop stations in the United States, Canada, and Brazil include WHTZ in New York (NY), KIIS-FM in Los Angeles (CA), KYLD and KMVQ-FM in San Francisco (CA), KHKS in Dallas (TX), KRBE in Houston (TX), CFBT-FM in Vancouver (BC), CKFM-FM and CKIS-FM in Toronto (ON), KSMG in San Antonio (TX), WIOQ in Philadelphia (PA), WPRO-FM in Providence (RI), WXKS-FM in Boston (MA), WIFC in Wausau (WI), WWPW and WWWQ in Atlanta (GA), WKSC-FM in Chicago (IL), WFLZ in Tampa/St. Petersburg (FL), WHYI-FM in Miami (FL), KLUC in Las Vegas (NV), WNCI in Columbus, Ohio (OH), WZPL (IN) in Indianapolis, KDWB in Minneapolis/St. Paul (MN), and Jovem Pan FM (with language) in Brazil. The stations generally gain large popularity with this format.

These stations typically are hybrids of the contemporary hit radio (CHR/pop) and Hot AC formats. This format contains a strong focus on current charts, contemporary and recurrent hits as well as placing a minority of older, classic hits from the 2000s and early to mid 2010s onto the playlist. Adult CHR stations play pop-friendly rhythmic, dance and hip hop titles alongside standard mainstream pop and pop rock fare, and often shying away from the most rhythmic CHR titles until they are established hits on the format.

Examples in the U.S. include WIXX in Green Bay, WKRQ in Cincinnati and KZZO in Sacramento. United Kingdom (UK) media regulator Ofcom states: "where a format requires a contemporary and chart music service, the main diet must be of modern music, reflecting the charts of today and recent months. Older, classic tracks would not be out of place, but only as spice to the main offering."

The adult CHR format is sometimes utilized by stations which are heritage Top 40/CHR outlets in their respective markets which have been in the format since the 1970s or 1980s or FM successors to former AM top 40s, with examples in the UK including the Hits Radio Network compiled of heritage radio stations including Clyde 1 in Glasgow and Radio City in Liverpool.

Also known as CHR/rhythmic, rhythmic crossover, or CHR/urban. These stations focus on hip-hop and dance-pop. There are differences between CHR/rhythmic and the urban contemporary format; urban stations will often play R&B and soul songs that CHR/rhythmic stations will not, and CHR/rhythmic stations, despite playlists heavy with urban product, sometimes have white disc jockeys and will include EDM and rhythmic pop music that urban outlets will not play. WQHT in New York, and KPWR in Los Angeles are among the most successful CHR/rhythmic stations in the U.S. and among the pioneers of the format.

Bilingual Spanish CHRs (such as WPOW in Miami, KHHM in Shingle Springs, California, KKPS and KBFM in Brownsville, Texas, WKAQ and WXYX in San Juan, Puerto Rico, KBHH in Fresno, California, WRUM-HD2 in Orlando, Florida and KLLI (FM) in Los Angeles) combine current and recent mainstream and rhythmic CHR hits with recent Latin pop hits, targeting young Latina listeners. Similarly, bilingual French CHRs (such as CKOI-FM in Montreal) are common in some Canadian markets, and combine anglophone and French pop hits. Filipino-based CHR stations (such as DWTM, DWRX, DWRT-FM, DWCZ, and DYIO) are also common in major Philippine market areas, which feature current mainstream and rhythmic CHR hits with recent OPM and P-Pop hits.