There's definitely a difference between people like Elton John, Yo Yo Ma, Lang Lang, and Marvin Hamlisch and a pg with musical talents. It's not just ambition, motivation, or drive. There seems to be a 'x' factor with them that propels them to world-class musicianship, which differs from the rest.

There's just something extraordinary about their gifts. Elton John acknowledges that he's got a rare, beautiful gift/talent and almost appears embarrassed by it when he's questioned on it by interviewers. He doesn't want to dwell on the fact. He knows it's not 'normal'.