The Capella Nova tracks appeared then disappeared from YouTube: on this CD they take MacMillan's reworking of the glorious Tallis introit at a more stately pace than the videos linked below.
There is now a video of them performing at the VOCES8 Centre, London
The Strathclyde Motets were written in response to MacMillan's honorary Doctorate from the University of Strathclyde. The 2nd set consists of Benedicimus Deum Caeli (Communion motet for trinity Sunday), the Canticle Of Zachariah (Canticle at Lauds), Lux Æterna (Communion motet from the Requiem Mass), O Radiant Dawn (Antiphon for 21 December), Os Mutorum (Motet for the Feast of St. Columbia), Pascha Nostrum Immolatus Est (Communion motet for Easter Day) and Qui Meditabitur (Communion Antiphon for Ash Wednesday). The motets were written for unaccompanied Cathedral or amateur Church choirs. On this recording the optional Medieval harp accompaniment to Os Mutorum was played by William Taylor
The "number one hit" on this record is O Radiant Dawn, and though Capella Nova are not at present to be found on YouTube, there is there a very fine recording by Kammerchor Hamburg. For pure exuberance watch Harry Christophers and Sam Glazer jointly conduct The Sixteen and a choir of children from Peterborough