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You know that feeling where you get a snippet of a song stuck in your head and it loops over and over? Those hard to shake songs are also known as earworms, and in this episode Molly has a particularly sticky one in her brain.

We'll find out why some songs are catchier than others and, most importantly, scientifically-proven ways to get rid of them.

Plus, we'll hear a mystery sound and a Moment of Um that answers the question: "Do spiders have bones?"

Today’s episode is sponsored by KiwiCo (kiwico.com/brainson) and you can listen to Million Bazillion wherever you get your podcasts.

You can support Brains On at brainson.org/fans — there you can check out our merch, join our free fan club, donate or buy our book!