Just look at the guests who have appeared over past 17 weeks in both the Sepultura Q&A and the rehearsal style playthrough performances; João Gordo (Ratos de Porão), Billy Gould (Faith No More), Mike Portnoy (Dream Theatre, Avenged Sevenfold, Adrenaline Mob), Zé Ramalho, Scott Ian (Anthrax), Roy Mayorga (Soulfly, Stone Sour), Jason Bittner & Felipe