Tool are an art-metal band, although neither half of that descriptor quite approximates the groups sound. Combining challenging musical textures with metals ferocious gloom-and-doom mindset, Tool became one of the most celebrated hard rock bands of the last two decades, famous as much for their cutting-edge videos as they were for their powerfully introspective lyrics and the coiled menace of their songs. Considering the extensive amount of time between their albums, each new Tool release is understandably treated as a major event by the groups large fan base.