Duets: The Final Chapter (sometimes referred as The Biggie Duets) is the final posthumous album by American rapper The Notorious B.I.G., and is a collection of songs featuring appearances of other prominent rappers. The album was released by Bad Boy Records on December 20, 2005 and charted at #3 selling 438,000 copies, beaten by the extremely high sales of Jamie Foxx's Unpredictable and Mary J. Blige's The Breakthrough. In the UK it climbed as high as #13 after the release of the album's first single "Nasty Girl". It is his third posthumous album that went Double-platinum and is said to be his last album of mainly new material.