Earlier quoted context omitted.
I do the same, but unintentionally and the songs that seem to pop into my head are all songs I hate. It's incredibly rare that my favorites end up playing, but rather repetitive Pop crap. This isn't even a comment about Pop Music, as even though I don't really listen to Pop, I've heard plenty that I like. But not the songs that fly around in my head all day; Pure garbage. Edit: As I was typing this, "La Macarena" pop…
I specifically avoid viral earworm songs because I am very prone to getting them stuck in my head. I can have the same song playing "in the background" non-stop in my mind for days. I have songs in my dreams and I'll wake up with them still playing in my head. Sometimes it will just be a single bar of a song, or just a piece of it looping. To this day, I have never once listened to "Chocolate Rain" or Rebecca Black's…
Like you, it will sometimes start when I'm sleeping. I won't remember much of the dream, but the song is still there, echoing as it was in whatever setting my dream took place.