During the Season 23 finale of 'American Idol,' Carrie Underwood performed 'I'm Gonna Love You' with finalist Slater Nalley, and Cody Johnson joined in as a surprise star guest.

The multi-platinum country artist shocked both the audience and Nalley when he joined mid-performance - pictures here.

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During the American Idol finale, which was released on May 18, 2025, country singer Cody Johnson made a surprise appearance. This caught both the viewers and semi-finalist Slater Nalley off guard.