 The record was released without Sepultura's involvement (they were signed to SPV Records at the time) and is not officially recognized by Sepultura themselves.The Roadrunner studio albums "Morbid Visions", "Against", "Nation", the debut EP "Bestial Devastation", and the rarities and live albums "Blood-Rooted", "The Roots of Sepultura" and "Under a Pale Grey Sky" are not represented on the record (although a version of Troops of Doom did originally appear on "Morbid Visions" and as an outtake from "Arise").The album was released on September 12, 2006, simultaneously with similarly unsanctioned best-of collections of the bands Type O Negative, Fear Factory and Ill Niño.