666

666 is a 1972 double concept album by Aphrodite's Child that sets a loose adaptation of the Book of Revelation to an expansive blend of progressive and psychedelic rock. The record pairs Demis Roussos' emotive lead vocals with Vangelis' expressive keyboards and electronics, and moves through rock, orchestral, choral and experimental textures across long, theatrical pieces. Its unconventional structure and dramatic atmosphere make it a striking example of early 1970s progressive experimentation.