President-elect Donald Trump will officially become the 45th president of the United States on Friday, and the inaugural events are in full swing.

At the “Make America Great Again!” welcome celebration this evening, Lee Greenwood joined "The Frontmen of Country" onstage to perform his iconic song "God Bless the U.S.A" for the president-elect, his family and thousands of attendees on Washington, D.C.'s National Mall.

Watch the moving performance above, and stay with Fox News Channel for must-see coverage of the Trump inauguration festivities.

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