"Some forty years ago, when he would set up the German Mass at Wittenberg, he wrote to the Elector of Saxony and Duke Johannsen, of illustrious memory, begging to invite to Wittenberg the old musician Conrad Rupff and myself, to consult with him as to the character and the proper notation of the Eight Tones; and he finally himself decided to appropriate the Eighth Tone to the Epistle and the Sixth Tone to the Gospel, speaking on this wise: Our Lord Christ is a good Friend, and his words are full of love; so we will take the Sixth Tone for the Gospel. And since Saint Paul is a very earnest apostle we will set the Eighth Tone to the Epistle. So he himself made the notes over the Epistles, and the Gospels, and the Words of Institution of the true Body and Blood of Christ, and sung them over to me to get my judgment thereon. He kept me three weeks long at Wittenberg, to write out the notes over some of the Gospels and Epistles, until the first German Mass was sung in the parish church. And I must needs stay to hear it, and take with me a copy of the Mass to Torgau and present it to His Grace the Elector from Doctor Luther. "Furthermore, he gave orders to re-establish the Vespers, which in many places were fallen into disuse, with short plain choral hymns for the students and boys; withal, that the charity-scholars, collecting their bread, should sing from door to door Latin Hymns, Anthems and Responses, appropriate to the season. It was no satisfaction to him that the scholars should sing in the streets nothing but German songs....The most profitable songs for the common multitude are the plain psalms and hymns, both Luther's and the earlier ones; but the Latin songs are useful for the learned and for students. We see, and hear, and clearly apprehend how the Holy Ghost himself wrought not only in the authors of the Latin hymns, but also in Luther, who in our time has had the chief part both in writing the German choral hymns, and in setting them to tunes; as may be seen, among others in the German Sanctus (_Jesaia dem Propheten das geschah_) how masterly and well he has fitted all the notes to the text, according to the just accent and concent. At the time, I was moved by His Grace to put the question how or where he had got this composition, or this instruction; whereupon the dear man laughed at my simplicity, and said: I learned this of the poet Virgil, who has the power so artfully to adapt his verses and his words to the story he is telling; in like manner must Music govern all its notes and melodies by the text."5 It seems superfluous to add to this testimony the word of Sleidan, the nearly contemporary historian, who says expressly concerning "_Ein' feste Burg_" that Luther made for it a tune singularly suited to the words, and adapted to stir the heart.6 If ever there were hymn and tune that told their own story of a common and simultaneous origin, without need of confirmation by external evidence, it is these.