J Dilla's death robbed hip-hop of one of its most innovative voices.
The producer moved the music - and, indeed, the culture - forwards across a series of deftly creative albums.
Unreleased rap recordings have been gathered on 'new' album 'The Diary', which is out this week through Mass Appeal.
New cut 'The Sickness' is online now - the beat is provided by Madlib, while Nas lends a guest verse.
When legends collide...