7. Fantasia Barrino, ''Proud Mary'' (season 3)
You don't see too many Idol wannabes audition with up-tempo numbers, and with good reason: It's hard enough to stay on key before Simon, Paula, and Randy without having to worry about rhythm. That's why Fantasia's effortless cover of the CCR/Tina Turner show-stopper is so memorable. Accompanied only by the steady snap of her own fingers, the season-three winner proved she was a force to be reckoned with from the very first note of her Idol journey.

Fantasia Barrino's audition: Watch it on YouTube