I'll never forget the first time I heard the music of John Tavener, who has died at the age of 69. It was 1989: the world premiere of The Protecting Veil, his cello concerto, at the Proms. A sound began to emerge - one deep-set chord - and rose. And rose. And continued to rise, a shining, all-enveloping sound that sucked you in like a tunnel filling up with golden light. It confounded every expectation. Every time you thought it couldn't carry on, it went further. It hit you in the gut, the heart and the human soul.
For decades it had been assumed - implicitly - that new classical music had to sound hideous, or it couldn't possibly be any good. The effect of The Protecting Veil was akin to a glass cathedral appearing amid a Brutalist cityscape of stained concrete.
By then, of course, Tavener had been around for some time. His early works embraced the avant-garde. His breakthrough composition was The Whale, an oratorio based on the story of Jonah, first performed in 1968 at the London Sinfonietta's inaugural concert and subsequently recorded on The Beatles' Apple label.
His devotion to spirituality in music developed with his conversion in 1977 to the Russian Orthodox Church. There he seems to have found his true voice. Career landmarks from then on were numerous and high-profile.