Deluxe four CD + Blu-ray edition. Contains remastered versions of the original album mix and the rare 1974 Greek LP mix (which featured considerably different mixes to the original LP release).

The Blu-ray disc features a 96 kHz / 24-bit Atmos and 5.1 up mixes and stereo mix, all of which were overseen by Vangelis. The Blu-ray also contains bonus video content of a 28-minute episode of the French television show Discorama from June 1972 featuring Vangelis performing in the television studio and talking about the album (with English subtitles added).

This set also 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. 666 by Aphrodite's Child, released in 1972, is a landmark in the realm of progressive rock, hailed as a daring and innovative concept album even by prog-rock standards.

This ambitious double album, spearheaded by Vangelis and lyricist Costas Ferris, explores themes from the Book of Revelation, blending rock, jazz, and world music with avant-garde experimentation.

The album's unique blend of electronic effects, intricate guitar solos, and the evocative vocal performances of Demis Roussos pushed the boundaries of 1970s rock music. Though "666" faced some controversy and initial resistance due to it's unorthodox themes and length, it has gained a cult following and is now considered a classic in the progressive rock genre. While it did not achieve commercial success upon release, it's legacy as a masterpiece of experimental rock has only grown over time.