McCartney pays tribute to "hell of musicians" Nirvana following reunion gig

Paul McCartney said there was "great power" on stage when he performed with Nirvana on Friday.

The Beatles legend brought the grunge group's surviving members, drummer Dave Grohl, bassist Krist Novoselic and touring guitarist Pat Smear, onto the stage during his gig at Seattle's Safeco Field for the band's second ever performance in their hometown since frontman Kurt Cobain's suicide in 1994.