Foo Fighters just ran the inaugural version of their very own music festival, Cal Jam – a star-studded rock lineup of QOTSA, Liam Gallagher, Japandroids, Wolf Alice and more squeezing into California’s San Bernadino.

Thankfully, it gave us a couple of surprise collabs, with Foo Fighters joined by the former Oasis frontman for a rendition of ‘Come Together’ by his favourite band, Pitchfork reports, with Aerosmith guitarist Joe Perry jumping in as well.

Of course, Foo Fighters have just released the new Justin TImberlake-featuring album Concrete & Gold, their second LP to hit the #1 spot on the US charts, while Gallagher just dropped his debut solo record ‘As You Were’.

Both are heading to Australia in 2018, too, with the Foo Fighters playing a headline tour, and Gallagher showing up for Falls Festival and a pair of sideshows.

Joe Perry, meanwhile, has a bit of time off as he waits for his bandmate Steven Tyler to recover from his recent hospitalisation, which forced Aerosmith to cancel the remainder of their tour.

Check out the ‘Come Together’ cover below.