For more information on this doxology, see Doxology, below. The individual psalms and the Magnificat are concluded by the doxology Gloria Patri. Monteverdi devotes a movement to every verse of the canticle, and two to the doxology. The iambic hymns have a special Easter doxology. The Gloria recites the Greater Doxology, and the Credo intones the Nicene Creed. The Sanctus is a doxology praising the Trinity. Both the doxology and Great Amen are preferably sung or chanted. Hymn singing while working was common, and the "Doxology" was a particular favourite. It is also mandated as a response during the kaddish doxology. The Greater Doxology is used in the Orthros (Matins) on Sundays and feast days. The Greater Doxology is always sung, whereas the Lesser Doxology is read. It is also sung at the conclusion of the Great Doxology. Other verses were added very early, forming a doxology. According to "Worship Music&colon; A Concise Dictionary", the lesser doxology is of Syrian origin.