I read on a magazine once: "Tool's nima will leave you cleansed or ready to kill". That's so true. As in other TOOL albums, every part of the band contributes with exactly what the song needs to express the emotion desired. Maynard James Keenan's vocals play a major role here, his voice expresses the anger, vulnerability so well, it's an outstanding voice. Guitar, drums and bass play just perfect in order to reach these emotional states.