Studying, and now I can't get this song out of my head!!

I'm a little concerned with how my mind works. I was revising for my COMU1010 exam, so I was taking notes from the book and they started talking about "Cicero" and his five canons of rhetoric. Now, I have this song STUCK in my head! I try to be good and study, but the universe clearly has different ideas :P I might go watch Chicago now.....