One of my biggest pet peeves is “earworms”. An earworm is a “cognitive itch” that gives your brain the urge to fill in gaps to a songs rhythm. When songs get stuck in our heads, the only way to scratch that “itch” is to constantly repeat the song over again. Some researchers believe that songs get stuck in our heads, because it is similar to trying to repress thoughts. The more we try not to think about it, the harder it becomes to forget about it. Other researchers believe that earworms are just a task for our brains while they idle. When we listen to music it triggers our auditory cortex, and researchers found that when they played a familiar song our brains automatically fill in the rest. As many as 99% of the population has been affected by a tune stuck in their head. There is no true way to get songs out of our heads once they are stuck, but some people swear by listening to a song all the way through, singing another song, or switching to another activity.