Green Is Blues is the second studio album by American singer and songwriter Al Green, released by Hi in April of 1969. Green Is Blues, released two days after Green's 23rd birthday, is considered his breakthrough album by critics and fans alike after the lukewarm reception of his debut Back Up Train (1967). Green Is Blues marks the first collaboration of Green and musician Willie Mitchell, who also serves as the album's main producer, a collaboration that lasted both of the careers of Green and Mitchell. The co-founder and President of Hi Records, Joe Cuoghi, acted as the recording supervisor. He died of a heart attack in July 1970.