From The Guardian:
Demis Roussos, the Greek pop and rock singer who became an unlikely international star in the 1970s and 80s, famed for his soaring, high-pitched voice, and voluminous kaftans, has died aged 69.
[…]
Roussos started out in the late 1960s as part of Aphrodite’s Child, a pioneering Greek trio now seen as one of the originators of progressive rock. Also in the group was another future star, Vangelis, who later composed the film scores for Chariots of Fire and Blade Runner. The band’s final release, 666 – a double album based on the Book of Revelation – is viewed as one rock’s first concept albums.
• Demis Roussos: http://www.demisforever.com