Aphrodite's Child was a project of the legendary, Vangelis Papathanassiou which also featured Demis Roussos, Lucas Sideras and SIlver Kouloouris. '666 (The Apocalypse of John, 13/18)' has become a sougt-after double album by this psychedelic / progressive art rock group. It was originally released in 1972. This reissued long player includes the tracks "The Four Horsemen", and "Break". The album was ostensibly an adaptation of Biblical passages from the book of the same name, but was also highly experimental in lyrics and composition.