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.

Country music star Carrie Underwood performed “America the Beautiful” a cappella at Donald Trump's inauguration on Monday.

The "American Idol" alum performed a cappella when her backing music refused to take the wheel. Country singer Carrie Underwood gave an impromptu a cappella performance of “America the Beautiful” at Donald Trump's second inauguration ceremony on Monday when technical difficulties prevented her pre-recorded backing music from playing.