Both Weezer and Foo Fighters were playing Brazil’s Rock in Rio festival, with Rivers Cuomo and Co. covering the single from 1991’s Nevermind just before Grohl’s band took the stage.
“I was backstage and I heard Weezer play the ‘Lithium’ song, I heard that shit,” the Foo Fighters frontman later told the cheering crowd during the band’s headlining set. “I gotta be honest, I cried a little bit. I did! I miss playing that song. I miss it, so I’m happy to hear Weezer play it.”
The former Nirvana drummer then repaid the favor by dedicating his performance of “Big Me” to his fellow rock band. During the set, Grohl also revealed that the Foo Fighters are about to head back into the studio to start work on their full-length follow-up to 2017’s Concrete and Gold.
Watch fan footage of both Weezer’s cover and Grohl’s reaction below.