We've all had that feeling of having a song stuck in our head. Typically, it's the first song you hear that day. You only have to hear a couple of notes of it, then it's there for good, slam-dancing around your brain throughout the day until you finally drown it out with alcohol or sleep. Then the next morning, you wake up to some other annoying tune and it all starts again.
That's why I've programmed my alarm clock to play John Cage's 4'33" every morning. For the rest of the day, I just keep hearing artistic silence.