Kendrick Lamar - Untitled, Unmastered

Kendrick Lamar has released a surprise eight-track album, Untitled Unmastered, comprising outtakes from the Grammy-winning To Pimp A Butterfly. Filled with jazz solos and politically-charged lyrics, it appers to be a companion piece to Butterfly, rather than a standalone record. All of the tracks are untitled, save for the date they were recorded.