Underwood won Season 4 of the singing competition show in 2005, and recently returned for Season 23 as a judge.

Of the 144 remaining hopefuls, only 62 were chosen to move on to the next round, which meant that more than half of the artists were cut by judges Lionel Richie, Carrie Underwood, and Luke Bryan. Everyone gathered at the Orpheum Theatre in Los Angeles to compete in the Idol Arena, where they all gave solo performances.

During Monday's episode of "American Idol," Carrie Underwood shared a heartfelt testimony after contestants went head-to-head during a performance of Brandon Lake's "Gratitude."