U2 (or, more accurately, P. Hewson, D. Evans, A. Clayton, and L. Mullen) are given composer credits on the record. Is this a proper collaboration or just a sample?

Other names involved include Mike Will Made It (who produced last month's "Humble"), BADBADNOTGOOD, DJ Dahi, Sounwave, Cardo, 9th Wonder, The Alchemist, and a mysterious "J. Blake" - that's gotta be James Blake, right?

The album was teased via "The Heart Part 4", which teased an possible impending release of 7 April. Although we were all a bit off the mark, we weren't far off - only one more week to go.

The lauded rapper, who headlines Coachella next month, is following up last year's untitled unmastered. demo compilation and 2015's seminal To Pimp A Butterfly LP.