Just plain great music but you will not find Hard Rock or Heavy Metal. Oldies galore, Motown - All the best genres. So sit back and relax or get up on the floor and boogie away The oldies format began to appear in the early 1970s. KOOL-FM in Phoenix became one of the first radio stations to play oldies music, at that time focusing on the 1950s and early 1960s.
In the 1960s, very few top 40 radio stations played anything more than a few years old. In the late 1960s, a few FM stations adopted top 40 formats that leaned towards adults who did not want to hear the same 30 songs repetitively but also did not want to hear music featured on Middle of the road radio stations.