Nowdays everyone thinks Slipknot is the heaviest, most evil, most aggressive band out there but Iowa is a complete disgrace. First off, the vocals SUCK. They are not evil, brutal, heavy, just a cheesy mess. Listen to Darkthrone, Morbid Angel, or Maniac of Mayhem and those are TRUE evil, brutal vocals. Also, the instrumental work is somewhat heavy but no good rhythm, and the drumming is awful. If you want TRUE metal DO NOT BUY THIS ALBUM!!!