Carrie Underwood sang her heart out during the second inauguration of President Donald Trump despite technical difficulties.

Besides Carrie, opera singer Christopher Macchio performed “O America,” and the national anthem, during the inauguration.

Donald Trump was sworn in as the 47th President, marking the inception of his final and non-consecutive term.

ABC News has live coverage of the inauguration of President Trump beginning at 6 a.m. until approximately 11 p.m.

Carrie Underwood, Christopher Macchio and Lee Greenwood honored President Trump in song at his inauguration. Here are the ...

Trump is expected to sign a flurry of executive orders regarding immigration and government reform once he is sworn in as the ...

Lee Greenwood and the United States Marine Corps band performed his patriotic hit during the presidential inauguration.

Lee Greenwood helped ring in Donald Trump’s official return to the White House. The country singer, 82, performed his ...

Greenwood, a frequent fixture at Trump's rallies, counts the businessman-turned-politician as one of his close friends.

President-elect Donald Trump is set to be sworn in as the 47th president on Jan. 20 in Washington, DC. USA TODAY will stream ...