Answer: "Our brain loves trying to predict the next note, next verse, when the chorus will hit, etc., and the brain releases endorphins (feel-good signals) every time it either guesses a new pattern correctly or is pleasantly surprised by a brand new sound. The more we listen to a song, especially on repeat, the fewer surprises the song will hold and the easier the patterns are to predict or remember. "
the person who found out that the cheese still tastes good only took a bite of mouldy cheese sandwich ...