On its sixth album, Brazil's most famous head-banging outfit takes a page from the nu-metal book but, more importantly, combines its brutal thrash-metal sound with indigenous music from its homeland, occasionally utilizing the percussion and chants of the country's Xavantes tribe to powerful effect. The biggest standouts are the lively, acoustic-guitar-driven "Itsari" and the epic closer "Canyon Jam," both improvisations with Xavantes musicians that make for welcome contrasts to the record's intense bombast.