2001 (sometimes called The Chronic 2001) is the second studio album by rapper and hip hop producer Dr. Dre. It was released on November 16, 1999, by Aftermath Entertainment and Interscope Records as the follow-up to his 1992 debut album, The Chronic. The album was produced mainly by Dr. Dre and Mel-Man, as well as Lord Finesse, and features several guest contributions from fellow U.S. rappers such as The D.O.C., Hittman, Snoop Dogg, Kurupt, Xzibit, Eminem, and Nate Dogg.