Tool's second album is one of those records that just keeps unfolding the more you listen to it, isn't it? There's something about that kind of layered, intricate songwriting that appeals to the sort of listener who likes to really dig into what they're hearing, and Cledvibes Radio reckons those deep divers are absolutely part of our audience. Whether you're into the mathematical complexity or the sheer heaviness of it all, there's no denying that album's left a mark on alternative metal that we're still feeling today.