vocals: serj tankian (system of a down)
vocals: zack de la rocha (ehemals rage against the machine)
gitarrist/background vocals: danon malakian (system of a down)
gitarrist: wes borland (limp bizkit)
bassist: jason newsted (ehemals metallica)
drums: david grohl (ehemals nirvana und queens of the stone age, jetzt foo fighters)

joah...