John Tavener, the English composer whose conversion to Russian Orthodoxy in 1977 led him to adopt a style not unlike that of East Europeans writing under the influence of old Slavic and Orthodox liturgical music, has died at 69.
An obituary by Allan Kozinn for The New York Times:
http://www.nytimes.com/2013/11/13/arts/music/john-tavener-dies-at-69-composer-with-eye-on-god.html?hpw&rref=obituaries