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: The Biography Dr. Dre: The Biography Dr. Dre: The Biography is a biography written about American rapper, music producer, and entrepreneur Dr. Dre written by Ronin Ro released February 28, 2007. Dr. Dre: The Biography covers the early days of Dr. Dre's career and his time with the World Class Wreckin' Cru, N.W.A, and Ruthless, the release of The Chronic and his time at Death Row, and the formation of his record label Aftermath, and the production work with artists such as Eminem, Snoop Dogg, 50 Cent, The Game (rapper), etc., to present. Mike Tribby, writing for Booklist, wrote a positive review