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Carrie Underwood, season 4, winner
”Alone” by Heart (1987), sung during Top 11 — Billboard Number Ones night Nobody figured the corn-fed country girl could rock out, but when Carrie stepped out onto the Idol stage in her teased-up hair and black leather jacket, she proved she could power belt with the best of them. It was absolutely spine tingling to hear her hit those high notes in the chorus. Ann Wilson should be proud.
Image Credit: Fox
April 4 2012 — 12:00 AM EDT