Tomorrow, America celebrates the 200th birthday of our national anthem, "The Star-Spangled Banner."

Francis Scott Key's iconic poem has defined the country's resilience and become a part of our national culture of pride and patriotism.

Historian Marc Ferris, author of "Star-Spangled Banner: The Unlikely Story of America's National Anthem," joined Uma Pemmaraju on America's News Headquarters to share some interesting facts surrounding the creation of the anthem.

Ferris noted that it was "instantaneously" adopted around the nation, quickly spread by both the printing press and live performances.

Ferris also pointed out that the first known performance of the anthem at a sporting event was at a baseball game in 1862, not the 1918 World Series, as had been previously assumed.

"It is a great song. I love it. It captured a moment. It was written behind enemy lines. It was like lightning written across the sky," Ferris concluded.

"I think it's a very edgy melody, and it's got historical gravitas behind it, as well."

Watch the clip from America's News Headquarters above.

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