But Mozart was extraordinary from the time he was a very young child, before he had had time to amass 10,000 hours of practice. He also surpassed his teacher, his father Leopold, as a young adult. Then, just this week, I read this article, Studying the Science behind Child Prodigies from NPR. It looks at cellist Matt Haimovitz, a former child prodigy whose mother played piano and took him to concerts, but there is no one else in his family with his kind of talent. Ellen Winner, a psychologist who studies child prodigies, argues that the brains of such children are different than the ones the rest of us have. Haimovitz was mentored by outstanding musicians, like Itzhak Perlman, and is today a successful adult musician.
Both the video and the NPR article are too short to do justice to this debate. There's truth on both sides.