damn straight it played music.
i listened in idaho falls, idaho and around the west from 1969 until the late 1980s.
1972 was my year of peak involvement with KNBR. i guested on the les williams show, met les, shehan alexanian ("the engineer with the burt reynolds-like body"), dave niles and frank dill july 22 off that year. in september, ed brady and his charming wife grethe stayed at my parent's home in idaho falls. ed, always a a gentleman, and much missed, ed brady.
KNBR was musically independent, probably more notable for what they didn't play than what they did. in the summer of 72, they did not play "goodbye to love" by carpenters or "brandy" by looking glass.
carter b replaced jack hayes sometime around november 1972.
does anyone know what became of les williams? last i knew, he was working for a smooth-jazz type ac in the east bay, i believe. i would love to hear from him.