Underwood's performance experienced technical difficulties, leading her to sing a cappella. She asked the attendees to join in. "You know the words," she said. Michaels Wolflick p

As he begins to belt the lyrics and head bang along to the beat, Underwood is seen grooving and singing with Insit

Crew members on the set of American Idol are tip-toeing around judge Carrie Underwood. After Carrie’s performance for President Trump’s inauguration in January, things have been “tense” on set at American Idol.