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 third richest figure in hip hop, with a net worth of $770 million. Dre began his career as a member of the World Class Wreckin' Cru. He found fame with the influential gangsta rap group N.W.A with Eazy-E, Ice Cube, MC Ren, and DJ Yella, which popularized explicit lyrics in rap to detail the violence of street life. His 1992 solo debut "The Chronic", released under Death Row Records, made him one of the best-selling American performing artists of 1993, and earned him a Grammy Award for the single "Let Me Ride". That year, he produced Death Row labelmate Snoop