During a German Mass in 1526 Luther recommended “German Agnus Dei” to be sung during Holy Communion. Many scholars believe that Luther had “Christe, du Lamm Gottes” in mind when he recommended “German Agnus Dei” to be sung. (Lutheran Cyclopedia a Concise In-Home Reference for the Christian Family Erwin L. Lueker,Author , c1954; Concordia Publishing House St Louis)
Luther's litanies are very similar to the roman Litany of All Saints.