Next time you go in for a haircut, ask the person who cuts your hair about the radio station that they happen to have playing (assuming that they have one). It will be a definite conversation starter, and they will definitely have no shortage of opinions for you. They are subjected to the radio all day, whether music fans or not, so they will have STRONG opinions for you. They can not only tell you WHAT will play, but WHEN it will play. They will pick up ALL the patterns of whatever station that they happen to be listening to. And they will say that the station plays the same songs at the same time every day. And that if they (the station) plays "this," then they will play "that." (Just don't tell them that you are in radio, or they may hold back on you!) I remember going into a Fantastic Sam's a couple of days before Christmas one year, and they had a Garth Brooks CD playing because they were tired of all the Christmas music on the radio.
I had my own experience with "radioverkill" (my name for radio overkill, as I call it). Back in the late '80s, I was part of a cemetery mowing crew. So most of the day I was outside, far away from any radio. However, for a total of about two hours every day (breaks, lunch, beginning and end of each workday), we were in the garage where all of the equipment was kept. There was a radio in there, and they kept it tuned to the local country station. Bad enough for me, but even with that relatively limited exposure to the radio, my co-workers noticed that that station was burning certain songs (usually the then-current hits) to death! And I am assuming that at least some of them actually LIKED country music!