Distributia
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Elizabeth MargulisHerself - Music Cognition Researcher
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Carol KrasnowHerself - Patient
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Carly Rae JepsenHerself - Narrator (voice)
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Gary SteinbergHimself - Neurosurgeon
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Mary-Kathryn RoelofsHerself - Patient
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Aniruddh PatelHimself - Author, Music Language & the Brain
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Gabrielle GiffordsHerself - Former U.S. Representative (archive footage)
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TokiMonstaHerself - Music Producer (as Jennifer Lee)