With its heavy-duty distortion, weighty rhythms, and cynical lyrics, Tool is a heavy metal band for the '90s. Rather like Metallica circa ...And Justice for All, the sound is focused heavily on texture, with vocals and guitars layered one atop the other, and heart-pounding drums underlying everything. There's not a whole lot of variety on Tool's second full-length album--most of the songs start off fairly low-key, kicking into high gear for the chorus, and repeat--but Maynard James Keenan's distinctive voice, the prog-rock stylings over a heavy metal base, and a supremely unhealthy dose of vitriol make this the perfect album to bang your head to.