The debut cd from the power group tool..... It is not as complex or in depth as lateralus or aenima, but it is definitely raw... This cd is about 20 minutes of about pure energy and rawness... YOu can see where tool was headed after this cd.... definitely a must have for hardcore fans, but if you don't feel like spending $15 on a E/P with only 6 songs... Then get Aenima or lateralus... Either way you cant go wrong.