McCartney was giving the first ever concert at the Safeco Field in Seattle, the city whose grunge scene Nirvana became an integral part of. To mark the occasion, he welcomed Dave Grohl, Krist Novoselic and Pat Smear on stage during his encore to play 'Cut Me Some Slack', the track they recorded together last year (2012) for Grohl's Sound City film project.
The Nirvana trio stayed on to play a selection of Beatles classics with McCartney: 'Get Back', 'Long Tall Sally' [a song the The Beatles covered], 'Helter Skelter', 'Golden Slumbers', 'Carry That Weight' and 'The End'.
McCartney first played live with Grohl and Novoselic at a Hurricane Sandy benefit gig in New York last December. A few days later, they played 'Cut Me Some Slack' again on iconic US TV show Saturday Night Live - this time joined by Smear on guitar.
However, the Seattle gig marks the first time McCartney and the Nirvana members have played multiple songs together - and the first time they've joined forces on Beatles classics. You can watch their rendition of 'Long Tall Sally'