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"Thus," wrote Isaac Jogues, "on the 29th of September, René Goupil, an angel of innocence and martyr of Jesus Christ, was immolated in his thirty-fifth year for Him who had given His life for ransom. He had consecrated his heart and his soul to God, and his work and his life to the welfare of the poor Indians."
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"In accord with no. 55 of the instruction of the Congregation of Rites on music in the liturgy (March 5, 1967), the Conference of Bishops has determined that vernacular texts set to music composed in earlier periods may be used in liturgical services even though they may not conform in all details with the legitimately approved versions of liturgical texts (November, 1967). This decision authorizes the use of choral and other music in English when the older text is not precisely the same as the official version."
— Catholic Bishops for the dioceses of the United States (November, 1969)
What Are The Mass Propers? Installment no. 4
published 21 November 2011 by Corpus Christi Watershed

Kyrie IV is a beautiful melody that appears in the Vatican II Hymnal (which has more than 100 pages of Mass settings in Latin & English). It appears in hundreds, if not thousands, of MSS down through the centuries. Perhaps I should post a bunch here . . . Well, let’s start with a few. Here is a beautiful example from around the year 1400:

Here is a rare version I found in an 1853 book from Paris. If only people had sung from this edition in 1853, instead of the various “corrupt” versions!

And here is a “corrupt” edition printed in 1857:

Finally, here is the Vatican Edition, which is still the official version of the Catholic Church:

What Are The Mass Propers? is an ongoing series dedicated to exploring the Catholic Liturgy. Although this series will focus on the Graduale Propers, other subjects will also be included. The views presented here do not necessarily represent the views of Corpus Christi Watershed. Comments, advice, and criticism are welcome, and can be E-mailed. E-mails will be read, but cannot always be answered (due to time constraints). To learn more about how Watershed is helping spread the love of Propers, please visit the Vatican II Hymnal website. “AF” refers to Adrian Fortescue, The Mass: A Study of the Roman Liturgy (1912).

Pictures of ancient manuscripts appearing in this blog come from various sources. The author has collected his own color photographs of manuscripts from libraries and monasteries in the United States and Italy. A Canadian chant scholar who has been taking photographs of MSS since the 1960’s has generously made his collection available as well, and the author is grateful. Some photographs also come from online archives hosted by libraries and universities the world over. All photographs are used with permission.