Country star Carrie Underwood gave an impromptu a cappella performance of 'America the Beautiful' at Donald Trump's second inauguration on Monday after a glitch left her without backing music.

Trump has long struggled to get high-wattage celebrities to perform at his events. In 2017, the list of musicians who reportedly turned down performing at Trump’s first inauguration included Elton John, Garth Brooks, Celine Dion, Idina Menzel and KISS.

Hollywood singer Carrie Underwood faced a technical glitch with the background music during her performance at Donald Trump's inauguration. However, despite the glitch, the songstress appeared to be in good spirits as she continued to sing.

An awkward few moments at Donald Trump’s inauguration turned into a powerful performance as the attendees joined Carrie Underwood to sing ‘America the Beautiful.’

Country superstar Carrie Underwood performed “America the Beautiful” at the inauguration of President Donald Trump on Monday, but not the way she expected she’d sing it. Underwood had to improvise and sing acapella at the last moment when there was a technical problem with the band or music that was supposed to accompany her performance.

After a brief pause, Underwood sang acapella, asking the crowd to join. during President Trump's inauguration.

Carrie Underwood’s performance of “America the Beautiful” at Donald Trump’s Monday inauguration was awkwardly interrupted by an audio error, prompting the Grammy winner and accompanying chorus to sing the patriotic tune a cappella.

After an uncomfortable two-minute technical glitch, the 41-year-old American Idol alum took control of the situation, singing “America the Beautiful” a cappella at the U.S. Capitol in Washington, D.C., just as Trump was being sworn in as the 47th president.

On Monday morning, President Donald Trump was sworn into office for his second presidential term. A variety of musical artists performed at his inauguration and the following celebrations, including country music stars Carrie Underwood and Lee Greenwood.