What makes a song get stuck in our heads?
7 March 2012 Last updated at 15:52 GMT
Researchers have been looking into what makes some songs stick in our heads.
Called earworms, they are the ones that you sing over and over again without knowing why.
BBC Radio 5 live Breakfast spoke to 6Music host Shaun Keavney who regularly talks about them on his show.
To hear other 5 live interviews, please visit the best bits page.