I have the exact same feelings as some previous posts.  Tool should not be classified as a rock band.  They should be classified as an orchestra.  The song writing in this album, I feel is bordering on (and i'm a violinist)  the Mozart level.  The way that they weave and twist the guitar melodies,  drum beats, amazing vocals, and underlying bass rhythm is beyond me.  Each  song is a masterpiece, a journey.  That's not all, the album as a whole,  feels like one large, well, opera.  Each song is perfectly placed, the  intermission fill material just adds to the experience.  This cd was  designed to be listened all of the way through, no shorter.  The listener  is taken on a journey as they flow through the truly original songs.  And  nothing is repetitive.  Everything is in sync (no, not 'nsync).  All I can  say is that if you want to hear what a really true metal band sounds like,  a band with amazing talent, a band that has the song writing capabilities  with the likes of Led Zepplin, Lennon, and Metallica, all in one, then  Aenima is a must buy for you.