The country girl stepped out of her comfort zone to tackle Heart’s ’80s power ballad “Alone” (many Idol contestants have since done so, with less success). This Top 11 performance inspired Simon to make a prediction: “Not only will you win this show, you will sell more records than any other previous Idol winner.” She did, and she has. Carrie Underwood, the season 4 champ, has still had more album sales than any other alum of the show.