Tool is amazing. They write complex, emotional music, never sound corny, and they can flat-out run a chill down your spine. This particular album is more of a straight rock approach to their brand of music, as opposed to the heavy distortion of Ænima. It’s tough to comapre the two albums because of this difference, but one thing I can pick out is that I like the bass better on Undertow. It is used to great effect; one example of this is on “Intolerence”, where the bass keeps the flow of the song together, allowing the guitar to play more complicated and varied riffs. The vocals by Keenan are simply astounding : he can sing soft and beautifully, and conversely go all out and yell. During all of the yelling, however, he never sounds untalented; he is able to keep the high quality of his voice. That’s very rare to find these days. And last but certainly not least, Danny Carey’s heart-pounding drums are able to pick a song up from a slow melody to all out rage and then slow it back down again. If they continue on the path that Undertow and Ænima have beaten out for them, their new album (which is rumored to have been in production since October ‘99) will be something special indeed.