The Diary is the sixth and final studio album by American hip hop recording artist J Dilla.
This long-lost album is the final batch of unissued material that J Dilla had assembled for release during his lifetime. It also represents his first rap album released since Ruff Draft (2003) and Champion Sound (2003).
Unlike previous full-length releases – from Jay Stay Paid (2009) to Dillatronic (2015) – all edited with unreleased instrumentals, The Diary is a collection of Dilla's vocal performances over his production and that of other producers, such as Madlib, Pete Rock, Nottz, Hi-Tek and Karriem Riggins among others.
 It also features vocal performances by Snoop Dogg, Bilal, Kokane, Frank n Dank, Nottz, Kenny Wray and Boogie (not to be confused with identically named rapper Boogie).