Carrie Underwood gave fans a blast from the past by performing "Alone" on "American Idol," two decades after doing so on the show in 2005.

“American Idol” judge Carrie Underwood has surprised viewers with a callback to her time on the show in 2005. At the beginning of Sunday’s episode, Underwood sang “Alone” (covered by ...

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.

Underwood, 42, has been slipping in and out of character since May 2005, when 30 million viewers watched her crowning as the fourth-season victor of “American Idol.” ...

Carrie Underwood is facing backlash from fans for singing along to one of Whitney Houston's most famous songs, with multiple online critics deriding the American Idol judge for even touching a ...