Christina Aguilera and Jimmy put on disguises and give a surprise performance of her hit "Fighter" and Aretha Franklin's "Think" in a New York City subway station. Subscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN Watch
Watch Christina Aguilera and Jimmy give unsuspecting commuters a surprise performance of Aretha Franklin's "Think" after posing as buskers in a New York City subway station in this preview airing tonight at 11:35 ET/10:35C on NBC. Subscribe NOW to
Christina Aguilera and Jimmy Fallon put on disguises and Busk in NYC subway station. Christina gives a surprise performance of Aretha Franklin's "Think" in a New York City subway station.
