Dave Grohl, Foo Fighters frontman and king of the summer concert circuit , has a well-documented love of Led Zeppelin , even forming a supergroup in 2009 with one of the band’s members . It was inevitable that Grohl would eventually bust out some Zepp at one of the shows on the current Foo Fighters tour—but bringing out Jewel to cover “Whole Lotta Love”? That’s in keeping with the nature of the quirky curveballs the band threw all summer long.

Grohl and the Foos invited Jewel onstage at their show Friday evening at Phoenix’s Ak-Chin Pavilion, and while their rendition of the Zeppelin II classic certifiably rocked, it almost didn’t happen. “We should do a f—ing song together,” Grohl said, when telling the crowd about meeting Jewel backstage. “So we played some nice thing that we thought would sound good, and then she says to me, ‘I don’t want to do that.’ She’s says, I want to do this.” With that, Grohl launched into the iconic riff as Jewel reprised Robert Plant’s famous vocals.