Agnus Dei

Agnus Dei, referring to the Christian theological concept of the Lamb of God and the associated liturgical text from the Roman Catholic Latin Mass, has been set to music by many composers, as it is normally one of the movements or sections in a sung Mass setting. However, sometimes it stands alone, e.g. it provides the lyrics for Samuel Barber's Agnus Dei, the choral arrangement of his Adagio for Strings.