They played rock, from albums, of the late '60s and the then-current 70's.
Here was their logo, for a while. I scanned it from some program or other, but I'd had a nice glossy vinyl sticker of it back in the day.
I listened to that station every day, in the car, in the house sometimes. One morning I turned it on and it was country music. Current country music.
No warning. A complete change.
If anyone knows what day that was, leave me a note. Wikipedia says it was 1980, Urban Cowboy that did it. It very likely had to do with the country line-dance craze that replaced disco as a singles-bar activity for lots of people. I thought it was earlier than 1980. I'm curious to know.