Carrie Underwood performed at Donald Trump 's presidential inauguration in Washington, D.C., on Monday, January 20 — but it didn't go down without a snag.

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.

Carrie Underwood was among the performers during the presidential inauguration ceremony held for Donald Trump, which took place at the U.S. Capitol Rotunda on Monday (Jan. 20). The country superstar's performance took place after Trump took the oath of office as the 47th president of the United States and made his inauguration speech,