Agnus Dei (music) Agnus Dei (music) 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". The Agnus Dei is a setting of the "Lamb of God" litany, based on John the Baptist's reference in to Jesus ("Behold the Lamb of God that
Missa Papae Marcelli effect. This was a new technique, using "tonal planning" to replace imitation as the means to keep the music moving forward. The Agnus Dei returns to the imitative polyphony of the Kyrie (the opening of Agnus Dei I repeats that of the Kyrie). As was frequently done in the 16th century, Palestrina adds an extra voice in Agnus Dei II, making seven for this movement, in which is embedded a three-part canon that begins with the head-motive. Missa Papae Marcelli Missa Papae Marcelli, or Pope Marcellus Mass, is a mass "sine nomine" by Giovanni Pierluigi da Palestrina. It is his