The Armed Man is a Mass by Welsh composer Karl Jenkins, subtitled “A Mass for Peace”. The piece was commissioned by the Royal Armouries Museum for the Millennium celebrations, and to mark the museum’s move from London to Leeds, and it was dedicated to victims of the Kosovo crisis. Like Benjamin Britten’s War Requiem before it, it is essentially an anti-war piece and is based on the Catholic Mass, which Jenkins combines with other sources, principally the fifteenth century folk song L’homme armé in the first and last movements. It was written for SATB chorus with soloists (soprano and Muezzin) and a symphonic orchestra. Guy Wilson, then master of the museum, selected the texts for the mass.(SOURCE Wikipedia)
Since it was written in 2000, this wonderful piece of music has been performed over 350 times in the UK and interestingly, by predominantly non professional choirs.