This article by Kenneth Walton appeared in The Scotsman 

Choir of London ****

ST MARY'S EPISCOPAL CATHEDRAL, EDINBURGH

KENNETH WALTON

THIS was a programme that centred on Biblical accounts of the destruction of Jerusalem and the Babylonian exile of the Jews, including Philippe de Monte's Super Flumina Babylonis and its sensuously fluid response from William Byrd, the motet Quomodo cantabimus - and both established spiritual warmth. The new work, Triptych, by Tarik O'Regan, was a triumph of simple effectiveness. His vocal scoring has a clarity and energy that resonated thrillingly, underpinned by thick-set strings that shift between fidgety repetitiveness and starry atmospherics. Jeremy Summerly, directing, kept to the letter of the score, allowing contrasting moods to speak for themselves. Lament for Jerusalem by John Tavener filled the second half, harnessing both taut structure and expansive expression. It was a glowing performance.