Kool Keith has been twice a crucial character, in hip-hop's history. In the 80's, he was the main rapper of the influential Ultramagnetic MC's. And later on, in the mid-90's, he was Dr. Octagon. As such, he reinvented rap once again. Playing the role of an extraterrestrial killer gynecologist, he pushed it out of its comfort zone, with the help of a new generation of talents from both New York and the Bay Area: the beatmakers The Automator and Kut Masta Kurt; the DJ Q-Bert; Sir Menelik, a rhyme partner; and even DJ Shadow, who contributed to the project with a remix.