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Corpus Christi Watershed

Pope Saint Paul VI (3 April 1969): “Although the text of the Roman Gradual—at least that which concerns the singing—has not been changed, the Entrance antiphons and Communions antiphons have been revised for Masses without singing.”

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Articles

Corpus Christi Watershed · March 19, 2013

1905 Plainchant and Solesmes (Cagin & Mocquereau)

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1905 Solesmes Rituale (Fragment)

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1957 Organ Accompaniments for the Kyriale (Polish)

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1952 The Rhythmic Tradition in the Manuscripts

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1857 Vesperale (Modern Notation)

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1921 Le plain-chant grégorien

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1937 Organ Accompaniments for the Kyriale (Bragers)

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

Psalm Tone Accompaniments (C. Warwick Jordan)

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1910s (?) Wagner’s Proprium de Sanctis

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1877 Magister Choralis (F.X. Haberl)

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1903 Solesmes Psalmi in Notis

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1928 Hügle Catechism of Gregorian Chant

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1911 Edwin Evans Gregorian Accompaniment Treatise

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1934 Gregorian Accompaniment Treatise (Bragers)

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1946 L’Accompagnement Du Chant Grégorien — Francis Canon Potier

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

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Corpus Christi Watershed

President’s Corner

    Spectacular Communion Setting!
    The FAUXBOURDON setting of the Communion for the Baptism of the Lord (which will occur this coming Sunday) strikes me as quite spectacular. The verses—composed by the fifth century Christian poet, Coelius Sedulius—come from a long alphabetical acrostic and are deservedly famous. The feast of the LORD’S BAPTISM was traditionally the octave day of Epiphany, but in the 1962 kalendar it was made ‘more explicit’ or emphasized. The 1970 MISSALE ROMANUM elevated this feast even further.
    —Jeff Ostrowski
    PDF • “Music List” (Sunday, 11 January)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for Feast of the Baptism of the Lord (SUNDAY, 11 January 2025). If such a thing interests you, feel free to download it as a PDF file. The FAUXBOURDON verses for the Communion Antiphon—to say nothing of the antiphon itself—are breathtaking. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the monumental feasts website alongside the official texts in Latin.
    —Jeff Ostrowski
    Epiphany Hymn • “New 2-Voice Arrangement”
    The Von Trapp Family Singers loved a melody that was featured heavily (perhaps even “too heavily”) in the Brébeuf Hymnal. It goes by many names, including ALTONA, VOM HIMMEL HOCH, and ERFURT. If you only have one man and one woman singing, you will want to download this arrangement for two voices. It really is a marvelous tune—and it’s especially fitting during the season of Christmas and Epiphany.
    —Jeff Ostrowski

Quick Thoughts

    “Reminder” — Month of January (2026)
    On a daily basis, I speak to people who don’t realize we publish a free newsletter (although they’ve followed our blog for years). We have no endowment, no major donors, no savings, and refuse to run annoying ads. As a result, our mailing list is crucial to our survival. Signing up couldn’t be easier: simply scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    PDF • “O Come All Ye Faithful” (Simplified)
    I admire the harmonization of “Adeste Fideles” by David Willcocks (d. 2015), who served as director of the Royal College of Music (London, England). In 2025, I was challenged to create a simplified arrangement for organists incapable of playing the authentic version at tempo. The result was this simplified keyboard arrangement (PDF download) based on the David Willcocks version of “O Come All Ye Faithful.” Feel free to play through it and let me know what you think.
    —Jeff Ostrowski
    PDF Download • “In Paradisum” in English
    We always sing the IN PARADISUM in Latin, as printed on this PDF score. I have an appallingly bad memory (meaning I’d be a horrible witness in court). In any event, it’s been brought to my attention that 15 years ago I created this organ accompaniment for the famous and beautiful ‘IN PARADISUM’ Gregorian chant sung in English according to ‘MR3’ (Roman Missal, Third Edition). If anyone desires such a thing, feel free to download and print. Looking back, I wish I’d brought the TENOR and BASS voices into a unison (on B-Natural) for the word “welcome” on the second line.
    —Jeff Ostrowski

Random Quote

Amid all these old liturgical books, I find that I am happy and at ease; I feel at home.

— Dom André Mocquereau (1884)

Recent Posts

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  • Spectacular Communion Setting!
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  • Bach’s Psychotically Awesome Walking Bassline

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