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Paul McCartney is reprising his collaboration with surviving members of Nirvana in concert.  The former Beatle welcomed Dave Grohl, Krist Novoselic, and Pat Smear to join him at his show Friday in Seattle.  They played a number of songs together, including the Beatles classic "Get Back." 

The group opened their five-song set with "Cut Me Some Slack," the collaborative track they wrote and debuted late last year.  They also performed a cover of Little Richard's "Long Tall Sally" as well as the Beatles songs "Helter Skelter" and "The End." 

The show was part of McCartney's "Out There" world tour.  

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