666 (Aphrodite's Child-ის ალბომი)

666 (subtitled The Apocalypse of John, 13/18) is the third and final studio album and only double album by Greek progressive rock band Aphrodite's Child, released in June 1972 by Vertigo Records. An ambitious double-LP concept album, ostensibly an adaptation of Biblical passages from the Book of Revelation, 666 was composed by keyboardist Vangelis and lyricist Costas Ferris. Conflict within the band and with their record company over the album's uncommercial style led to its release being delayed for more than a year. Though it was eventually released to a lukewarm critical and commercial reception, it later attracted a cult following among fans and musicians and became the group's most acclaimed project. It has appeared on various lists of the greatest progressive rock albums of all time.