Closing out their set at Rock in Rio on September 28th, Weezer played a cover of Nirvana's 'Lithium' as a teaser for fans who would soon be watching headliners the Foo Fighters.
Dave Grohl was backstage ready to play, and the cover apparently moved him to tears.
"We’re gonna cover a song from Dave Grohl’s old band to tide you over until the main course in a few minutes," said Weezer frontman Rivers Cuomo, introducing the song. The band launched into the gritty Nevermind hit four days after the 28th anniversary of the revolutionary album's release.
Weezer played five covers in total during their set, three of them coming off the group's 2019 cover album Weezer (The Teal Album).
After the Foos took the stage, they played 14 songs before Grohl acknowledged Weezer's performance of the Nirvana hit.
"Tonight I’m gonna dedicate this one to Weezer," declared Grohl who lightly strummed the opening moments of "Big Me" on guitar.
Although the frontman wasn't watching Weezer's set, he was still able to hear their tribute, which moved him on an emotional level: "I was backstage and I heard Weezer play the 'Lithium' song," Grohl told the crowd, continuing, "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 again. So this one goes out to the sweet Weezer."
Watch fan-shot footage of both song performances below.