However, since his death many of the unreleased and unmastered songs have been officially released. The album originally leaked as a 19-track unmastered CD. An unmastered version of the album was leaked before its release. The version on the advanced version of the album is the unmastered demo version. In 2016, he was also featured on Kendrick Lamar's untitled unmastered. On June 16, the unmastered version of the song leaked. Then an unmastered version of "Turn Off" was leaked online in September 2008. As early as June 24, 2007, an unmastered promo copy was leaked onto the internet. On May 25, 2012, an unmastered version of the track leaked online. An unmastered beta version would later leak in late November. "Untitled Unmastered" received widespread acclaim from critics. Untitled Unmastered (stylized as untitled unmastered.) is a compilation album by American rapper Kendrick Lamar.