Irish rock band U2 has been famous enough to sell out stadiums for years. But this week, they played a much more intimate venue: the New York City subway.

The band, whose most recent album Songs of Innocence came out as a free surprise release on iTunes last year, made a special stop in New York for an episode of "The Tonight Show Starring Jimmy Fallon." Dressed in disguise, the band set up their instruments in the 42nd Street subway stop in Manhattan, then proceeded to play their own songs as if they were covering them.

"Nobody knows this is going to happen. Nobody knows it's U2," said Fallon, also in disguise. "They're just going to get out there and do it."

Fallon and U2 couldn't keep up the ruse for long, though. After playing "I Still Haven't Found What I'm Looking For" to lukewarm reception from commuters, they took off their sunglasses and showed their faces. A crowd quickly gathered around the band, who then launched into a spirited acoustic rendition of their hit single "Desire."

Watch the entire ruse in all its hilarious glory below.