In Nirvana's hometown, former members of the defining grunge band reunited to join Sir Paul McCartney on stage.
There were no Nirvana songs played though.
The group covered Beatles songs and played Cut Me Some Slack, which it debuted during a benefit concert for Hurricane Sandy relief last year.
McCartney told the adoring crowd that he was in the middle of a "Nirvana reunion".
Later in the day, Novoselic tweeted: "Thank you @PaulMcCartney for a great show and for having us play with you all."