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Jimmy Fallon’s Neil Young Joins Crosby, Stills & Nash for Iggy Azalea’s ‘Fancy’ (Video)

David Crosby, Stephen Stills and Graham Nash joined Jimmy Fallon onstage to harmonize an acoustic jam of the hip-hop hit

It was a CSNY reunion, of sorts, on “The Tonight Show” when Jimmy Fallon donned his best Neil Young garb for an acoustic rendition of Iggy Azalea’s “Fancy.” It started off as just a fun take on the hip-hop song, but it took a turn towards awesome when Crosby, Stills & Nash joined him on stage.

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As Fallon does a spectacular Neil Young impression, the harmonies with David Crosby, Stephen Stills, and Graham Nash really did sound like a throwback to the classic sound of Crosby, Stills, Nash & Young. The band has become as famous for their shifting lineup over the years as they are for their music, but they were together again for this one-time performance.

Even better, for the song’s refrain, “Who that, who that, I-G-G-Y,” the guys made the obvious change. “Who that, who that, C-S-N-Y,” they sang.

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We never knew we needed to hear “Fancy” as a throwback classic rock anthem, but we’re glad we did. Maybe they’ll slip it into their regular song rotation on tour.