Dr. Dre's second solo album, "2001", released on November 16, 1999, was considered an ostentatious return to his gangsta rap roots. It was initially titled "The Chronic 2000" to imply being a sequel to his debut solo effort "The Chronic" but was re-titled "2001" after Death Row Records released an unrelated compilation album with the title "" in May 1999. Other tentative titles included "The Chronic 2001" and "Dr. Dre". The album featured numerous collaborators, including Devin the Dude, Snoop Dogg, Kurupt, Xzibit, Nate Dogg, Eminem, Knoc-turn'al, King T, Defari, Kokane, Mary J. Blige and new protégé Hittman, as well as co-production between Dre and new Aftermath producer Mel-Man. Stephen Thomas Erlewine of the website AllMusic described the sound of the album as "adding ominous strings, soulful vocals, and reggae" to Dr. Dre's style. The album was highly successful, charting at number two on the "Billboard" 200 charts and has since been certified six times platinum, validating a recurring theme on the album: Dr. Dre was still a force to be reckoned with, despite the lack of major releases in the previous few years. The album included popular hit singles "Still D.R.E." and "Forgot About Dre", both of which Dr. Dre performed on NBC's "Saturday Night Live" on October 23, 1999. Dr. Dre won the Grammy Award for Producer of the Year, Non-Classical in 2000, and joined the Up in Smoke Tour with fellow rappers Eminem, Snoop Dogg, and Ice Cube that year as well.