AM FM

Today, I woke up with a guitar transition from There Goes Another Love Song by the Outlaws in my head. It took me a while to figure out what song it was because it was just the guitar part running over and over again. Finally, the chorus jumped in and I had it but I had to look up on the internet who the song was by. I'll bet I haven't heard that song in years. I know I don't have a recording of it. Where does this stuff come from? It's just weird.