Tool's first album sounded like nothing else at the time. Dark, mysterious, angry, complex, meticulously crafted and loaded with oddly amorphous song structures, 1993's Undertow confounded both music critics (many of whom tried to lump the band in with the then-popular grunge movement) and early Tool fans
This article originally appeared on www.rollingstone.com: Tool’s ‘Undertow’: 10 Things You Didn’t Know