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U2 helped NBC kick off the latest incarnation of The Tonight Show Monday night as they were new host Jimmy Fallon's first musical guest. With the show returning to New York, Fallon wanted to show off the beautiful skyline at dusk so he had U2 perform on the observation deck of 30 Rockefeller Center, 70 stories up, which is known as the Top of the Rock. In front of a small audience and backed by the drummers from the Rutgers University Marching Band they did their new single, "Invisible." U2 then came inside to sit on the couch where they did an acoustic version of their Academy Award-nominated "Ordinary Love."