It's a harsh buzz, for sure. Like bipolar badasses you don't want to sit by at the local watering hole, the band plays dual-guitar leads and rumbling riffs. "Nova" kicks off the bender with straightforward metallic blues, while the rest of the tunes are given to violent mood swings. "Two" bursts into sudden thrash. "Ten" winds down into a ponderous guitar lullaby before a litany of nightmare screams. And the epic "Four" has more kick than anything Tool has done since the '90s.