Repetitious to the point of ritualistic, this work took on an extraordinarily cumulative power.
A contemporary bracket proved that the subtly laced dissonances and mysterious momentum of Arvo Part's Nunc dimittis were vastly superior to the easy tunefulness of John Tavener's The Lamb.
Two motets by William Byrd were personal highlights. The first, Ave Verum, mesmerised with its waves of lapping Misereres; the second, Laudibus in sanctis, seemed to dance within its own echoing space.
The piece de resistance was Spem in Alium, the vast 40-voice motet by Thomas Tallis.
While not denying its historical importance, this is a curiosity, perhaps best enjoyed from the inside, as a performer.
What we heard was an extremely laudable achievement, considering the logistics of combining forces with 30 local singers.
Forty full-on voices inevitably take on a force of their own and there were thrilling moments. However, shifting textures were not as seamless as they might have been, there were flecks of indecision and the original pitch was not sustained.
Yet, how could this legendary choir have anything less than a standing ovation? That they got, and we were rewarded with a rousing rendition of the great motet's final section.