The surviving members of Nirvana (Dave Grohl, Krist Novaselic and touring guitarist Pat Smear) joined Paul McCartney onstage again last night when he performed on 'Saturday Night Live.' Sir Paul and the temporarily reunited trio played the new song 'Cut Me Some Slack.'

Grohl, Novaselic and Smear hadn't performed together live since 1994, the year Kurt Cobain killed himself and effectively put an end to Nirvana. They got together with McCartney last Wednesday at the 12-12-12 Concert for Sandy Relief, where they debuted 'Cut Me Slack.' They repeated the performance on 'SNL' last night and it was just as good (and a relief after McCartney's first number, the snoozy 'My Valentine' played with his regular band).

'Cut Me Some Slack' will also appear on the soundtrack to Grohl's upcoming 'Sound City' documentary, which will premiere at Sundance early next year and then roll out to theaters and home video sometime in February.

Watch Nirvana Perform With Paul McCartney on 'SNL'

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