Dave Grohl was joined on stage by his daughter Violet during Foo Fighters‘ headline set at Lollapalooza 2021 last weekend (August 1).The rock giants were nearing the end of their set at the Chicago festival when Violet joined them on stage for a high-energy cover of X’s ‘Nausea’.The track was the first cover to be recorded by the pair and also served as a nod to their family history – X’s D.J.