Over the last 50+ years, the makeup of the radio landscape has changed much. If you review Kasey Kasem's AT40 lists from the 70's you'll find that it was quite common for what is today called "country", "soft rock", "jazz", "acid rock", "heavy metal", and "disco" to all be on the chart at the same time. The Carpenters shared the airwaves with Alice Cooper. This was the time when FM radio began making inroads into the domination of the AM stations. To me, the availability of optional AM/FM stereo auto radios was a huge factor in this. I paid extra for one in my new 1977 Ford F-150. I was 22 when that happened, but before that I was an AM champion, eschewing WPEZ in favor of 13Q.
I grew up as an AM DXer, listening to the giants like CKLW, WCFL, and KMOX. One by one, they fell by the wayside, following KQV into the wasteland of talk/news radio.
Some stations touted the playing of "album cuts" instead of the 45 RPM single tracks. I remember hearing WCOL attempt to break the 3:05 version of "Free Bird"...it lasted one week! It took FM radio to make it the classic that "Stairway to Heaven" had become in 1973.
The content hasn't changed, but the delivery systems have.
I don't listen to Pandora. I listen on a Kenwood TS-2000 instead of a Hallicrafters S-120 nowadays. I mourn the loss of shortwave broadcasting and cruise intervalsignals.com to remember my roots.
You want me to listen? Surprise me. WKHB sneaks in Elton John's classic "Love Lies Bleeding" and "Grey Seal" every now and then. I wish that they'd add the Carpenters cover of "Desperado" along with Billy Joel's "The Entertainer". I agree with the guy on WCBS who likes "Meal Ticket" from "Captain Fantastic". I suspect that the reason it wasn't released as a single was that "Rock of the Westies" and "Island Girl" followed a few months later. Still, WCFL played "Street Kids", another non-single.
I'm 58 and have been listening for a long time. A classroom visit from a local Columbus DJ named Jimmy Roach convinced me to not seek a career in broadcasting, but like "Moonlight" Graham, I sometimes wonder "what if?"
Look at the AT40 lists from the era and add the songs. There's no reason I should hear the same song twice in an eight-hour time period unless your shuffle program has a glitch in it.