Paul McCartney is pulling out all the stops on his ongoing One on One tour. Last week the musician revisited a pair of Beatles classics that he hadn’t performed live in more than a half-century. Then, last night in Seattle, the Beatle played one of the Fab Fours’ heaviest tracks: “Helter Skelter”—a pre-cursor to the music that made Seattle a grunge haven back in the late ‘80s.

Fittingly, Nirvana bassist and Seattle icon Krist Novoselic joined McCartney for the track, playing bass while McCartney ripped through demanding vocal passages—an impressive feat considering the singer’s 73-year-old vocal cords.

McCartney and Novoselic previously worked together on the track, “Cut Me Some Slack,” which they performed together at a benefit concert on 12/12/12 and later recorded.

Following that collaboration–as NME writes—fellow Nirvana dude Dave Grohl had this to say: “We walked in; we jammed the song. It just came out of nowhere. The best songs happen that way. We recorded it live and put a vocal over it and that was it. It was three hours and it was perfect.”

Over the weekend, it was also reported that McCartney would be included on the historic “Oldchella” bill, joining Bob Dylan, The Rolling Stones, Neil Young, The Who, and Roger Waters as part of an unprecedented lineup. The new music festival will take place on October 7-9 at the Empire Polo Field in Indio, California, (the same location as Coachella) and marks the first time Dylan and McCartney have ever shared a bill. This will probably be your only chance to see this group—the veritable firmament of rock music—perform in such close proximity, so keep your eyes peeled for more info in the coming months. In the meantime, go “Helter Skelter.”

Let us know what you think of the McCartney/Novoselic rendition in the comments.

Image: Mary McCartney