“An earworm is a piece of music that sticks in one’s mind so that one seems to hear it, even when it is not being played. Other phrases used to describe this include musical imagery repetition and involuntary musical imagery.
This is also called a ‘haunting melody’ or ‘hard-to-shake melody’. In Germany, an earworm is known as “Ohrwurm”, a type of song that typically has a high, upbeat melody and repetitive lyrics that verge between catchy and annoying. Earworm is also referred as ‘stuck song syndrome, ‘involuntary musical imagery’, ‘brainworms’ or ‘sticky music’ .”