Dave Grohl has finally performed live with his nemesis, 11-year-old British drummer Nandi Bushell. Bushell, who was gifted a guitar by Tom Morello after going viral for covering Rage Against The Machine’s “Guerrilla Radio,” challenged Grohl to a drum battle last year — and won. He wrote a theme song for her and she wrote a song for him. And last night, at Foo Fighters’ concert at the Forum in Los Angeles, Grohl invited her to the stage to help close their set out with a performance of “Everlong.” This is how Grohl introduced her: