the dance charts. Pure dance-music radio stations (as opposed to CHR/rhythmic and rhythmic AC formats such as MOViN) are not very common but tend to have loyal audiences in the markets where they do exist. Examples include WPTY on Long Island, NY and KNHC in Seattle. This format is very popular on internet radio stations such as KVPN Digital Broadcasting (VPN Digital 1) Los Angeles. CHR/rock Stations with this format, a modernized Rock 40 format, are similar in some ways to the Adult CHR and Mainstream CHR/Pop formats, but also incorporate modern rock/alternative/active rock and modern AC titles in an upbeat presentation. Examples include KSXY in Santa Rosa, California, WDJQ in Canton, Ohio, WIXX in Green Bay, Wisconsin, KKCK in Marshall, Minnesota, and WMOM in Ludington, Michigan. An early version of rock-leaning CHR is Rock 40, which was popular in the late 1980s. This format, developed by Joint Communications who servicemarked the name in 1987, is a young-male-targeted hybrid of CHR and album-oriented rock (AOR) that combines the formatics of the former with the music mix of the latter. After a short period of successful ratings, the Rock 40 format began to decline because it was too similar to conventional AOR yet lacked appeal among CHR fans who desired less emphasis on rock. According to Lee Abrams, a pioneer of the AOR format, Rock 40 was "too wimpy for the real rockers and too hard for the mainstream people". Stations that previously broadcast the format include KEGL in Dallas, KQLZ (Pirate Radio) in Los Angeles, KRZR in Fresno, California, KXXR in Kansas City, and WMMS in Cleveland. Rock 40 stations eventually segued to CHR or an AOR spinoff format such as active rock or modern rock. Other variations There are also variations targeting minority ethnic groups, such as CHR/español (Latin pop), and CHR/Tejano (Tex-Mex and Tejano) which are commonly found in Arizona, Texas, California, and Mexico. In Greater China (People's Republic of China, Taiwan, and Hong Kong), there is also Mandopop and Cantopop which are the top 40 variants in that language. Key contributors Todd Storz Credit for the format is widely given to Todd Storz, who was the director of radio station KOWH-AM in Omaha, Nebraska in 1951. At that time typical AM radio programming consisted largely of full-service "block programming": pre-scheduled, sponsored programs of a wide variety, including radio dramas and variety shows. Local popular music hits, if