Readings Psalm 107 * Psalm 115 * Exodus 39:32—40:16 * Luke 8:22–39 * Formula of Concord: Solid Declaration VII:107–115 CommemorationToday we commemorate Johann Walter, Kantor*. Having begun his service — as a composer and bass singer — in the court of Frederick the Wise at the age of twenty-one, Johann Walter would go on to publish a collection of hymns that would become the basis of many subsequent hymnals. Walter would serve for a total of thirty years as kantor in the cities of Torgau and Dresden. Additionally, he aided Martin Luther in the preparation of the German Mass.