In August 2011, at the peak of the Wasting Light Tour supporting the album recorded in Dave Grohl's garage on analog tape and reclaiming Foo Fighters' raw post-grunge roots after electronic experiments, the California band headlined Lollapalooza in Chicago—the festival revived in 2005 as an urban event in Grant Park emphasizing alternative rock and indie. Their 90-minute set, with Pat Smear's guitar riffs and Taylor Hawkins' drum power, embodied tour climax, fusing stadium anthems like "Everlong" with improvisational jams to spark euphoria among 90,000 under Chicago sun. As a key moment in their American dominance, this performance underscored their bridge between 90s grunge and modern rock.