666 is one of the most original progressive rock albums of all time. Composed by the late maestro Vangelis, with lyrics written by Costas Ferris, it is a conceptual double album that was hailed upon its release as “a work of stunning complexity and originality” and is the crowning moment in the career of Aphrodite's Child.

Featuring material such as 'The Four Horsemen', 'Aegian Sea', 'Babylon', 'Do It', 'The Beast' and 'All the Seats Were Occupied', the album's reown has grown steadily over the decades, influencing successive generations of musicians. Unique and relevant over 50 years after its original release, it is widely regarded as one of the most accomplished and important records ever released on the legendary Vertigo imprint, the jewel in the crown from the so-called 'swirl' period that refers to the famous label design used between 1969 and 1973.

This box set contains audio remastered versions of the original album mix and the rare 1974 Greek LP version (which featured considerably different mixes to the original LP release), along with a Blu ray disc featuring 96 kHz / 24-bit Atmos & 5.1 up mixes & stereo mix, all of which were overseen by Vangelis. The disc also features the bonus video content of a 28-minute episode of the French television show Discorama from June 1972 featuring Vangelis talking about the album (with English subtitles added).

The boxed set includes a lavishly illustrated book featuring a new essay and original interviews with the band plus many previously unseen photographs that Vangelis sourced from his various archives around Europe not long before his sad passing in May 2022.