South Korean President Yoon Suk Yeol wowed guests at President Biden's State Dinner with a surprise performance of the 1970s smash hit "American Pie."

Yoon delivered the unexpected show while being hosted by the Bidens at the State Dinner for the Republic of Korea on Wednesday evening.

"We want to hear you sing it," Biden told Yoon in front of the high-profile guests.

The Korean president didn't hesitate before grabbing the mic from Biden and broke into song after speaking a few words in his native language.

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South Korean President Yoon Suk-yeol sings

President Biden cheers as South Korean President Yoon Suk Yeol sings Don McLean's "American Pie" during the State Dinner at the White House in Washington, D.C., on Wednesday. (Chip Somodevilla)

Cheers, applause and laughter erupted from the crowd, as Yoon, who usually communicates through a translator, belted out the all-American song.

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Yoon was also presented with a guitar signed by "American Pie" singer-songwriter Don McLean.

Yoon Suk Yeol, South Korea's president, holds a guitar

South Korean President Yoon Suk Yeol holds a guitar signed by singer-songwriter Don McLean and presented by President Biden at the White House in Washington, D.C., on Wednesday. (Oliver Contreras)

"The next state dinner we’re going to have, you’re looking at the entertainment," Biden said after the hit rendition. "I had no d--- idea you could sing."

On Wednesday, Yoon and Biden signed an agreement to increase the presence of U.S. nuclear submarines in South Korea.

South Korea president sings 'American Pie'

President Yoon Suk Yeol sings during the State Dinner at the White House in Washington, D.C., on Wednesday as President Biden looks on. (Oliver Contreras)

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Also during his visit, Yoon delivered a speech Thursday during a joint meeting of Congress.

Fox News' Timothy H.J. Nerozzi contributed to this report.