Madonna gives surprise performance in New York's Washington Square Park in support of Hillary Clinton

Madonna gave New Yorkers the surprise of a lifetime when she serenaded the crowd at Washington Square Park on Monday night (Nov. 7) with a special acoustic performance in support of Hillary Clinton.

She stood in the center of Washington Square Fountain surrounded by a group comprised mostly of NYU students and cheered as she performed covers of John Lennon's "Imagine" and Peter, Paul and Mary's "If I Had A Hammer," as well as her own songs "Rebel Heart" and "Like A Prayer."

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She amped up the crowd and encouraged everyone to get to the polls Tuesday to vote, saying, "Vote with your heart, vote with your mind, vote with your spirit, vote with your soul. Save this country, please."

See photos from Madonna's surprise concert:

Madge has been supporting Clinton throughout the campaign, from talking about the election while opening for Amy Schumer to stripping down with Katy Perry for the cause.

Watch a snippet of the surprise performance below:

See photos of Madonna through the years: