Tool established themselves as one of America's most enduring and unpredictable acts with an ever-evolving brand of muscular but mind-altering sonics, a wry sense of humor, and a mystical aesthetic that attracted a cult-like following of devoted fans with just a handful of albums spread across decades. Their greatest breakthrough was to meld dark underground metal with the ambition of art rock, crafting multi-sectioned, layered songs as if they were classical composers. While embracing the artsy, they also paid musical homage to the relentlessly bleak visions of grindcore, dea...