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U2 surprises fans with NYC subway concert days before 'Tonight Show' performance

Bono and his band — now slotted to be the sole guests for this Friday's show — popped up all over New York City.
/ Source: TODAY

For a band that had to postpone a weeklong residency on "The Tonight Show Starring Jimmy Fallon," U2 certainly appears to be making up for lost time.

U2 on Jimmy Fallon
U2 performs on "The Tonight Show" on February 17, 2014.NBC

After a memorable rooftop performance for Fallon's "Tonight Show" hosting debut, U2 planned to return for an extended residency in November. But when lead singer Bono was seriously injured in a bike accident and endured hours of surgery, those plans were put on hold.

Fast-forward to this week, when a healthier Bono and his band — now slotted to be the sole guests for this Friday's show — popped up all over New York City.

And, as it turns out, Fallon's been spotted with them.

On Monday night, the band emerged unannounced at a subway stop beneath Grand Central Terminal to perform "Angel of Harlem." Flocks of fans gathered to sing along and document the moment on social media.

And, in a likely homage to the accident that prompted the "Tonight Show" delay, Bono and Fallon took a bike ride outside of 30 Rock.

Bono and Jimmy Fallon seen riding their bikes on sidewalk while filming a set for 'The Tonight Show Starring Jimmy Fallon' in New York City
Bono and Jimmy Fallon seen riding their bikes on sidewalk while filming a set for 'The Tonight Show Starring Jimmy Fallon' in New York City on Sunday May 3, 2015.Splash News

"The Tonight Show" featuring U2 is scheduled to premiere at 11:35 p.m. Friday.

Follow TODAY.com writer Chris Serico on Twitter.