January 13, 2014 — Members of MACHINE HEAD, METALLICA, SLAYER, TESTAMENT, EXODUS, DEATH ANGEL, FORBIDDEN, SPIRALARMS, SUICIDE SILENCE, and RUBBLE will perform classic songs by BLACK SABBATH as part of an all-star tribute band that will headline the Robb Flynn & Friends Benefit Concert on Friday, January 17, 2014 at the Oakland Metro Operahouse in Oakland, California.