In 2006, Derek Amato suffered a major concussion from diving into a shallow swimming pool. When he woke up in the hospital, he was different. He discovered he was really good a playing piano. Yes, we’re serious. Derek is one of just a few dozen known “sudden savants” or “accidental geniuses”—people who survive severe head injuries and come out the other side with special gifts for music or math or art. We were skeptical, so we brought Derek into a studio and asked him to play. He can’t read music or even play “Twinkle, Twinkle, Little Star,” but the music he improvises is beautiful. In this episode, Shankar talks with Derek and two experts to try to understand his musical transformation.