Carrie Underwood surprised American Idol viewers during the Season 23 finale on May 18, 2025. She performed with Top 5 finalist Slater Nalley, who returned for one last song. They sang "I'm Gonna Love You," Underwood's duet with Cody Johnson from 2024.
During the performance, Underwood introduced Cody Johnson himself. Johnson joined them onstage, surprising both Nalley and the audience. Nalley, visibly shocked, grinned as Johnson began singing harmonies alongside Underwood.
Underwood's connection with Nalley dates back to his audition. While Jamal Roberts won the season, Nalley experienced a significant country music moment during the finale.