Carrie Underwood won "American Idol" 20 years ago but kept private life separate from her county music career. So her Trump inauguration performance shocked fans.

American Idol fans are gushing after Carrie Underwood performed a Celine Dion hit.

Carrie Underwood opened the latest episode of American Idol on Sunday, April 27, with a cover of Heart's "Alone," and fans say she "took the season by storm" with the nostalgic performance.

“No Way It’s Been 20 Years”: Carrie Underwood Recreates Legendary ‘American Idol’ Moment With Cover of Heart’s “Alone”

On Monday night's "American Idol" episode, Carrie Underwood choked up as she delivered feedback to two women who covered Brandon Lake's "Gratitude."