Almost everyone has done it. You discover a song you love, and suddenly it's playing during your commute, while you're working, at the gym, and before you go to bed. Days later, you're still pressing the replay button. Psychology says this habit doesn't necessarily mean you're obsessed with the song. Instead, repeatedly listening to the same music can reflect how the brain processes emotion, reward, memory, and familiarity. Researchers have found that familiar songs often provide comfort, improve mood, and even help people process difficult emotions.
