Just a clarification and not meant as a criticism... KKMO is mostly "banda" music (the stuff with the tuba), with some norteña (the songs with accordion) and only occasionally a ranchera song (the ones with acoustic guitars and trumpets). That is the direction the "regional Mexican" format has been going for the last 15 to 20 years,
With the exception of an occasional song by the "old timers" there is little ranchera being heard unless it's on a Spanish regional classic hits station.