This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
John Tavener first drew wide attention in 1968 with the cantata The Whale, a work that established him as a significant English composer while he was still working within a broadly conventional musical language rather than the explicitly devotional idiom that would later define his reputation. Born in Wembley Park near London in January 1944, Tavener had already built enough of a public profile by his mid twenties that The Whale's reception marked him as a composer to watch well before the religious turn that came nine years later.
In 1977 he converted to Orthodox Christianity, joining the Russian Orthodox Church in Britain, a step that reshaped nearly everything he wrote afterward according to his own later account of his career. Tavener described his own music after the conversion as an attempt to make what he called icons in sound, a phrase that ties his compositional aim directly to Orthodox devotional practice rather than to purely musical or secular concerns, and that he used to characterize the whole body of work that followed rather than any single piece within it.
The distance between The Whale in 1968, written before his conversion, and the explicitly religious choral and instrumental works that followed 1977, among them The Lamb in 1982 and The Protecting Veil in 1988, marks a documented turn in Tavener's own career, a composer who described his own later music in the vocabulary of Orthodox iconography rather than in the language of concert music alone.