Madonna plays free concert to support Hillary Clinton in Washington Square Park

GREENWICH VILLAGE, Manhattan β€” Madonna surprised hundreds of fans Monday night with an impromptu concert in Washington Square Park to support Hillary Clinton.

The pop star took to Twitter to let fans know she'd be in Washington Square Park at 7:30 p.m.

Wearing a red, white and blue hat, Madonna played an acoustic guitar and sang "Like A Prayer."

Madonna has been a strong supporter of Clinton and officially endorsed her in September.

Clinton spent Monday evening at a star-studded rally in Philadelphia alongside Bon Jovi and Bruce Springsteen.

Donald Trump rallied in Manchester, New Hampshire on the eve of Election Day.