Green Is Blues is an Al Green album from 1969.Upon the album's '40th Anniversary' re-release as a digital deluxe package in July 2009, noted soul writer Pete Lewis of the award-winning 'Blues & Soul' stated: "Significant for matching for the first time Green's soulful refined vocal brilliance with the skilful production of co-writer/producer Willie Mitchell and the tight arrangements of Memphis' renowned Hi Rhythm Section, the album ushered in a new era for "The Memphis Sound" - effectively kick-starting a studio partnership between Green and Mitchell that would see Al go on to become the premier soul superstar of the early Seventies - and arguably the last great Southern soul singer, period."