noun: earworm; plural noun: earworms
a catchy song or tune that runs continually through a person's mind.
I was just sitting here at my desk this morning and I realized that I have a song stuck in my head. Then I realize there are certain songs that get stuck in my head and don't go away. They just stick there and replay over and over and over. So I thought I would share the songs that drive me crazy when they get stuck in my head.