The band called Tool is unique in the world of commercial recording artists; through some means, Tool and their management have been able to convince their label to allow them to release material on a very slow cycle. In fact, over the past twenty years of it’s existence, Tool has only released 4 studio albums (Undertow, Ænima, Lateralus, 10,000 Days), one demo, and two live sets (Opiate, Salival). In essence, Tool has been able to only release albums that have been completely developed and rehearsed. The four members of Tool - Danny Carrey, Justin Chancellor (replaced Paul D’Amour), Adam Jones, and Maynard James Keenan - work on various side projects in the interim between studio time, projects such as the noted A Perfect Circle and ongoing Puscifer; given so much breathing room, the content of each studio album is stellar, and audaciously executed. At first approximation Tool is a band that plays progressive metal, but each album begs to be listened to in the deepest sense; I would say that Tool deals just as much in ethos as it deals in hard-hittin’ metal.