[Photos by: Wikimedia Commons]

Foo Fighters frontman Dave Grohl and musician-turned-activist Krist Novoselic got onstage together last weekend for a quick cover of “Molly’s Lips,” the two surviving Nirvana members reuniting at a Foos concert in Seattle.

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Novoselic’s new band Giants In The Trees opened the show, as noted by SPIN. But things got a lot more Nirvana-y once the Foo Fighters closed out the gig. The ex-Nirvana bassist joined Grohl onstage to do Nirvana’s take on the Vaselines’ tune.

And, as eleventh-hour Nirvana guitarist Pat Smear is also a card-carrying Foo, he joined in on the mini-reunion jam. On Twitter, Novoselic marked the occasion by referencing a seeming Nirvana in-joke about “Dan Grohl and Paul Smear.”

We reported earlier on Noveselic’s fresh act supporting the Sept. 1 show. And the two former Nirvana instrumentalists previously reunited at a December event in Oregon. See all the Fighters’ upcoming fall tour dates down after the vid.

Foo Fighters tour dates

09/04 – Edmonton, AB @ Rogers Place
09/06 – Calgary, AB @ Scotiabank Saddledome
09/09 – Vancouver, BC @ Pepsi Live at Rogers Arena
09/10 – Portland, OR @ Moda Center
09/12 – San Jose, CA @ SAP Center
09/14 – San Diego, CA @ KAABOO del Mar
10/06 – San Bernardino, CA @ Cal Jam ‘18
10/08 – Phoenix, AZ @ Talking Stick Resort Arena
10/10 – Denver, CO @ Pepsi Center
10/12 – Kansas City, MO @ Sprint Center
10/13 – St. Louis, MO @ Enterprise Center
10/15 – Detroit, MI @ Little Caesars Arena
10/17 – Milwaukee, WI @ Fiserv Forum
10/18 – St. Paul, MN @ Xcel Energy Center

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