Kendrick Lamar's surprise-released 'GNX,' is a hard-hitting, deeply coded masterpiece that cements his status as the world's greatest rapper.

Kendrick Lamar has surprise-released his new album “GNX,” featuring contributions from Jack Antonoff, SZA and Kamasi Washington. The 12-track “GNX” is relatively light on features, with the exception of two tracks — “Luther” and “Gloria” — that feature SZA.

US rapper Kendrick Lamar has released a surprise new album called GNX. The 12-track album, which is the performer's sixth studio release, dropped on his social media pages at around 17:00 GMT on Friday. It features contributions from American R&B star SZA as well as Kamasi Washington, among others.