Artemios "Demis" Ventouris-Roussos[a] (/ˈruːsoʊs/; 15 June 1946 – 25 January 2015) was a Greek singer and performer who had international hit songs like "Forever and Ever" as a solo performer in the 1970s after having been a member of Aphrodite's Child, a progressive rock group that also included Vangelis.

Roussos sold over 60 million albums worldwide and became "an unlikely kaftan-wearing sex symbol"