KBZT-FM "K-Best" signed on the air in August 1987 with a syndicated adult standards format.[2] The call letters had been scooped up on October 2, 1986, from the Los Angeles station that dropped them to become KLSX just days before. On February 17, 1992, KBZT-FM flipped to country music, citing the high popularity of country nationwide and the lack of a local country station on FM.[3]
The country music came to an end on October 1, 1993, when the station became a simulcast with KUNA (1400 AM) as KUNA-FM. The flip came about even though KBZT outrated KUNA at the time.[4]