Besides Carrie, opera singer Christopher Macchio performed “O America,” and the national anthem, during the inauguration. Country singer Lee Greenwood also performed “God Bless the U.S.A,” prior to Trump taking his oath of office.

Carrie Underwood sidestepped the technical issues at Donald Trump’s inauguration ceremony and performed “America the Beautiful” A cappella.

The singer had to adapt to technical difficulties at Trump’s Inauguration. It’s probably a performer’s worst nightmare: You walk out on the biggest stage, with millions of people watching, and instead of hearing the music you are about to sing to,