That Song You Cannot Stop Humming Is Not An Accident, Scientists Say

There is a reason certain tunes loop in your head all day, and it is oddly specific.

It usually strikes in the shower or the second your alarm goes off. A snippet of melody starts looping, over and over, and no amount of willpower shuts it down. You did not choose this song. This song chose you, and it will not leave.

Researchers who study these musical loops, often called earworms, found they share a shape. They tend to be simple, easy to hum, with one little unexpected leap that keeps the brain curious. Curiosity plus repetition equals a tune that overstays its welcome.

Your brain also hates an unfinished pattern. If a melody stops before it resolves, your mind keeps replaying it, trying to close the loop. It is basically an itch you cannot scratch with your fingers.

The good news is there is a trick. Hum the tune all the way to the end, or chew some gum to jam the signal. Give your brain closure, and the stubborn little melody finally packs its bags.