- Christina Aguilera teamed up with Jimmy Fallon to perform inside a New York City subway station for Thursday's episode of NBC's "The Tonight Show Starring Jimmy Fallon."
- The two stars began by singing Aretha Franklin's "Think" inside the Rockefeller Center stop while wearing disguises.
- They wore hats and sunglasses, but Aguilera's signature voice was probably recognizable.
- A crowd of people quickly formed as they belted out the song.
- The pop singer and Fallon removed their disguises and revealed their true identities, sending the crowd into a frenzy.
- Aguilera concluded by singing "Fighter" from her 2003 album "Stripped."
- Watch the video below.
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