Carrie Underwood was nervous the night she made her Grand Ole Opry debut. Most singers are, but the naturally shy young woman from Oklahoma had won American Idol just two weeks before — the first country singer to finish first on the top-rated TV show — and she wasn't sure how she'd be accepted at the venerated institution. She needn't have worried. "It's kind of magical," she gushed on the side of the Opry stage just after finishing her two-song set. "I don't feel like I deserve this at all." But Carrie absolutely deserved the thunderous applause that night, and that sense of magic has stayed with her throughout her career — one of the most impressive in country music history.