In 1974, KWKI-FM (call letters which began in 1971) became "The Rock of Kansas City." With this format, it became the first true mainstream FM rock station in Kansas City. After a short period of religious programming beginning in 1978, the station achieved its strongest ratings to date with a switch to soft adult contemporary as KLSI-FM ("Classy 93") on July 4, 1982. The first song on "Classy" was "Kansas City Lights" by Steve Wariner. Following the purchase of the station by Apollo Broadcasting in April 1990, the station rebranded as "Mix 93" in July of that year. In addition, their call letters were changed to KMXV (which were adopted on November 15 of that year), and the station shifted towards the growing Hot AC format.