The first time you heard Taylor Swift’s “Shake it Off,” you barely noticed. Then the song made its undercover assault, seeming to play in every grocery store, on every radio, and in every TV commercial you saw — and before you realized it, you were bobbing your head to the music. Soon, you were seeking it out, playing it over and over when no one else was around. Years later, you still can’t get enough of that Taylor Swift goodness. Never mind your questions about whether this story is autobiographical; the real question is this: What makes you want to repeat some songs over and over again while other songs go stale? The answer may lie in evolution.

— Read on curiosity.com/topics/theres-an-evolutionary-reason-why-you-listen-to-some-songs-on-repeat-curiosity