Was it the same song, over and over, or a selection of tunes? The reason I ask is that there was a station, years ago, that was known for playing one song over and over. On the anniversary of the Edmund Fitzgerald tragedy, it played "The Wreck of the Edmund Fitzgerald" for hours on end. Other times it played Jefferson Airplane's "White Rabbit" endlessly. It was assumed that both instances were of the same station, although I never heard any proof of that. I haven't heard it in many years.