The singer of the Foo Fighters, Dave Grohl, is used to invite fans on stage to play with the band. In Kansas City on October 12, a 10 year old boy went up with the band on stage, saying that he knew songs by Metallica. He played 'Enter Sandman', with Dave Grohl singing the lyrics and the rest of the band following. To please little Collier, Grohl gave him his guitar.