2001 (Dr. Dre album) were later cut from the final track list. The tracks have been leaked later on several mixtapes, including "Pretox". The album's production expanded on that of "The Chronic", with new, sparse beats and reduced use of samples which were prominent on his debut album. Co-producer Scott Storch talked of how Dr. Dre used his collaborators during recording sessions: "At the time, I saw Dr. Dre desperately needed something. He needed a fuel injection, and Dre utilized me as the nitrous oxide. He threw me into the mix, and I sort of tapped on a new flavor with my whole piano
Dr. Dre father 20 years later, when Curtis became rapper Hood Surgeon. Inspired by the Grandmaster Flash song "The Adventures of Grandmaster Flash on the Wheels of Steel", he often attended a club called Eve After Dark to watch many DJs and rappers performing live. He subsequently became a DJ in the club, initially under the name "Dr. J", based on the nickname of Julius Erving, his favorite basketball player. At the club, he met aspiring rapper Antoine Carraby, later to become member DJ Yella of N.W.A. Soon afterwards he adopted the moniker Dr. Dre, a mix of previous alias Dr. J