Choral version of Agnus Dei sung to the theme of Samuel Barbers Adagio for strings.Performed by The Choir of Trinity College,Cambridge,UK.Directed by Richard Marlow.
http://www.trin.cam.ac.uk/index.php?pageid=667
Amazon link to album – http://www.amazon.co.uk/Barbers-Adagio-Barber/dp/B000003G8N/ref=sr_1_1?ie=UTF8&s=music&qid=1211644222&sr=8-1
Sorry there is no video, but just a picture of the great composer Samuel Barber.
Lovely piece of music….