Loretta Graziano Breuning said this quote

Music gives pleasure because your mind keeps predicting what comes next. Each correct prediction triggers dopamine. You can't make good predictions for unfamiliar music, so you don't get the dopamine. But when music is too familiar, something strange happens. You don't get the dopamine either because your brain predicts it effortlessly. To make you happy, music must be at the sweet spot of novelty and familiarity.

~ Loretta Graziano Breuning

When a monkey loses a banana to a rival, he feels bad, but he doesn't expand the problem by thinking about it over and over. He looks for another banana. He ends up feeling rewarded rather than harmed. Humans use their extra neurons to construct theories about bananas and end up constructing pain.

~ Loretta Graziano Breuning