Since its release on August 17, 1959, "Kind of Blue" has been regarded by critics as Davis's greatest work. It is his most acclaimed album, and has been cited as the best-selling jazz record ever released, despite later claims attributing the achievement to Davis's first gold record "Bitches Brew" (1970). Music writer Chris Morris cited "Kind of Blue" as "the distillation of Davis's art." "Kind of Blue" has been lauded as one of the most influential albums in the history of jazz. One reviewer has called it a "defining moment of twentieth century music." Several of the songs from the album have become jazz standards. "Kind of Blue" is consistently ranked among the greatest albums of all time. In a review of the album, AllMusic senior editor Stephen Thomas Erlewine stated: