2001 is the second studio album by American hip hop recording artist Dr. Dre, released on November 16, 1999, by Interscope Records. It is the follow-up to Dr. Dre's debut album The Chronic (1992). It was produced primarily by Dr. Dre and Mel-Man, and Lord Finesse, and features several guest contributions from rappers such as Hittman, Snoop Dogg, Kurupt, Xzibit, Nate Dogg, and Eminem. 2001 exhibits an expansion on his debut's G-funk sound and contains gangsta rap themes such as violence, promiscuity, drug use, street gangs, and crime.