untitled unmastered

Untitled Unmastered (stylized as untitled unmastered.) is a compilation album by American rapper Kendrick Lamar. It was released on March 4, 2016, through Top Dawg Entertainment, Aftermath Entertainment and Interscope Records. It consists of previously unreleased demos that originated during the recording of Lamar's album To Pimp a Butterfly (2015), continuing that work's exploration of politically charged and philosophical themes, as well as its experimentation with free jazz, soul, avant-garde music, and funk styles. The album received widespread acclaim from critics, and it debuted atop the US Billboard 200.