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Woman stuns visitors at Lincoln Memorial with impromptu national anthem

Star Swain nailed a rendition of "The Star-Spangled Banner" before a crowd of awe-struck tourists at the monument in Washington, D.C.
/ Source: TODAY

"The Star-Spangled Banner" is moving, beautiful and notoriously difficult to sing — that's part of what makes the following video so impressive.

In the now-viral clip, viewed by millions on Facebook and on YouTube, Star Swain stands at the Lincoln Memorial in Washington, D.C., during a busy tourist rush and decides to do the unthinkable — for most of us.

After copping to feeling nervous, Swain went on to belt out a pitch-perfect rendition of the national anthem.

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The soulful performance turned the heads of dozens of other visitors, and when Swain finished, several approached her for hugs and high-fives. Even armed guards congratulated her for the moving moment.

And Swain's song continues to impress fans online.

"I'm a Combat Veteran and I've laid many Soldiers and friends to rest in defense of our nation," Mary Tobin wrote in response to the clip on Facebook. "Every time I hear the anthem it means the world to me, but when I hear it sung with conviction and strength it makes me even more proud to have served this country because people like you make America worth fighting thank you...."

Others said Swain, who is from Tallahassee, Florida, brought them to tears with her voice.

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As for Swain, she so appreciated the feedback and sudden popularity that she filmed a "thank you" video set to music.

Follow Ree Hines on Twitter.