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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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Views from the Choir Loft

Articles

Mark Haas · January 2, 2024

Encourage the Clergy to Sing

Those in the pews are like sheep listening for the voice of the Good Shepherd. Guest article by Mark Haas.

Corpus Christi Watershed · January 1, 2024

Pipeline to Heaven

The new chapel of Saint John Vianney College Seminary (SJV) is scaling new heights in beauty since its recent pipe organ installation.

Jeff Ostrowski · December 30, 2023

Christmas • “Approached By A Famous Musicologist”

If you’re somebody who likes grandiloquence, you’ll prefer the description by Dr. Ellis.

Andrea Leal · December 29, 2023

Musical Resources • “The Season of Septuagesima”

My three (3) musical lineups include music by Henryk Botor, Kevin Allen, and Father Victoria.

Jeff Ostrowski · December 26, 2023

Jeff Ostrowski Attempts To Sing “Corde Natus”

“There were only two classes of men who heard the cry that night…” Fulton J. Sheen

Jeff Ostrowski · December 22, 2023

“Not Schmaltzy” • An Ancient Christmas Hymn

Sharing one’s opinions candidly is a quick way to make lifelong enemies.

Cynthia Ostrowski · December 20, 2023

“My Favorite Christmas Song” • Played by Dr. Carbonell and Fr. Justin Ward (Live Recording)

If one must have piano in church, this is the way to do it!

Jeff Ostrowski · December 20, 2023

How To Contact Corpus Christi Watershed

We thought you might enjoy reading messages we’ve received over the last few weeks.

Jeff Ostrowski · December 18, 2023

“Liber Usualis” • Jeff’s Proposed Modifications

In 1957, the Abbey of Solesmes publicly claimed copyright over “the rhythmic signs 𝗮𝗻𝗱 𝘁𝗵𝗲 𝗿𝗵𝘆𝘁𝗵𝗺 𝘁𝗵𝗲𝘆 𝗿𝗲𝗽𝗿𝗲𝘀𝗲𝗻𝘁.”

Jeff Ostrowski · December 16, 2023

Our Most Popular Download Ever? • (Advent Hymn)

The more I argued, the more Kenneth insisted that none of my objections were valid…

Follow the Discussion on Facebook

William J. Fritz · December 13, 2023

Recording Release! • Marenzio’s “Salve Regina”

I recorded my choir trying out the little “puzzle” (sent by Benedetti to Cipriano de Rore) to see whether the pitch would drift at all…

Jeff Ostrowski · December 12, 2023

PDF Download • “Münster Hymnal” (Harmony Edition) — 123 pages!

“As the organ plays, so does the congregation sing!” —From the Foreword

Jeff Ostrowski · December 10, 2023

New Hymn By Father Dylan Schrader

That’s not an easy hymn to sing 𝘢 𝘤𝘢𝘱𝘱𝘦𝘭𝘭𝘢 but my volunteer choir attempted it. If you think it’s easy, please send me a recording of your choir singing it!

Andrea Leal · December 8, 2023

What Ever Happened to Advent?

Juanpablo Macias, a seminarian studying for the Archdiocese of Las Vegas, enjoys composing, singing, and playing organ for the sacred liturgy.

Dr. Charles Weaver · December 8, 2023

An Important Anniversary

Dom Pothier died 100 years ago today.

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Corpus Christi Watershed

President’s Corner

    Which Mass?
    In 1905, when the Vatican Commission on Gregorian Chant began publishing the EDITIO VATICANA—still the Church’s official edition— they assigned different Masses to different types of feasts. However, they were careful to add a note (which began with the words “Qualislibet cantus hujus Ordinarii…”) making clear “chants from one Mass may be used together with those from others.” Sadly, I sometimes worked for TLM priests who weren’t fluent in Latin. As a result, they stubbornly insisted Mass settings were ‘assigned’ to different feasts and seasons (which is false). To understand the great variety, one should examine the 1904 KYRIALE of Dr. Peter Wagner. One should also look through Dom Mocquereau’s Liber Usualis (1904), in which the Masses are all mixed up. For instance, Gloria II in his book ended up being moved to the ‘ad libitum’ appendix in the EDITIO VATICANA.
    —Jeff Ostrowski
    Like! Like! Like!
    You won’t believe who recently gave us a “like” on the Corpus Christi Watershed FACEBOOK PAGE. Click here (PDF) to see who it was. We were not only sincerely honored, we were utterly flabbergasted. This was truly a resounding endorsement and unmistakable stamp of approval.
    —Jeff Ostrowski
    PDF Download • “Atténde Dómine”
    Although it isn’t nearly as ancient as other hymns in the plainsong repertoire, Atténde Dómine, et miserére, quía peccávimus tíbi (“Look down, O Lord, and have mercy, for we have sinned against Thee”) has become one of the most popular hymns for LENT—perhaps because it was included in the famous Liber Usualis of Solesmes. This musical score (PDF file) has an incredibly accurate version in English, as well as a nice version in Spanish, and also the original Latin. Although I don’t claim to have a great singing voice, this morning I recorded this rehearsal video.
    —Jeff Ostrowski

Quick Thoughts

    “Reminder” — Month of Febr. (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. It couldn’t be easier to subscribe! Just scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    PDF Chart • “Plainsong Rhythm”
    I will go to my grave without understanding the lack of curiosity so many people have about the rhythmic modifications made by Dom André Mocquereau. For example, how can someone examine this single sheet comparison chart and at a minimum not be curious about the differences? Dom Mocquereau basically creates a LONG-SHORT LONG-SHORT rhythmic pattern—in spite of enormous and overwhelming manuscript evidence to the contrary. That’s why some scholars referred to his method as “Neo-Mensuralist” or “Neo-Mensuralism.”
    —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

Random Quote

“The Humanists abominated the rhythmical poetry of the Middle Ages from an exaggerated enthusiasm for ancient classical forms and meters. Hymnody then received its death blow as, on the revision of the Breviary under Pope Urban VIII, the medieval rhythmical hymns were forced into more classical forms by means of so-called corrections.”

— ‘Father Clemens Blume, S.J.’

Recent Posts

  • Which Mass?
  • Like! Like! Like!
  • PDF Download • “Pange Lingua” in Simple (Contemporary) Polyphony for Three Voices
  • PDF Download • “Gregorian Chant Booklet” mailed by Pope Saint Paul VI to every bishop
  • My Response Surprised A Parishioner ‘Upset’ About Latin

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