You could, if you want to put it negatively, call A Perfect Circle the light version of Tool. However, that would be unjust. In its genre, which I would find difficult to asses (rock? progressive? art rock? alternative? post-grunge?) it is one of the best. The distinct voice of Maynard James Keenan and Billy Howerdel’s guitar playing make the band’s sound. This album contains strong songs. Even the odd meters don’t sound distracting. The sound is dark, somewhat aggressive. Production wise it is one of the best. Still, if you were to ask me what I prefer the most: listening to Tool or to A Perfect Circle? I’d have to say the latter one. Although Tool’s Undertow is a classic.