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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

Archives for January 2016

Jeff Ostrowski · January 9, 2016

Letter To The FSSP Choir In Los Angeles

There’s something less scary you can do to help build up God’s Kingdom.

Jeff Ostrowski · January 9, 2016

Musical Resources • Feast of the Holy Family (Extraordinary Form)

“O Lord Jesus Christ, who—in the days of thy sub­jec­tion to Mary and Joseph—didst consecrate home life by ineffable acts of virtue…”

Richard J. Clark · January 8, 2016

Communion Antiphons for Lent • RCIA and Scripture

Propers for Lent and their relationship with RCIA and the scriptures

Jeff Ostrowski · January 8, 2016

The Miraculous Rise Of The Traditional Latin Mass

A puzzling article appeared in the National Catholic Register by Msgr. Charles Pope.

Dr. Alfred Calabrese · January 7, 2016

The Theology of a C-sharp Minor Chord

Every time I listen to this piece I’m still shocked.

Jeff Ostrowski · January 7, 2016

Bishop René H. Gracida On Internet Porn

“Parents, love your children and do your best to shield them from exposure to pornography.” —Bishop Gracida

Andrew Leung · January 7, 2016

A Faithful Bishop

I am very thankful that I get to know Bishop Roger Foys of Covington, KY, who wrote a great letter and decree about the Mass back in 2011.

Christopher Mueller · January 6, 2016

On Catholic Art

It’s time to renovate and reoccupy our own tradition!

Andrew Leung · January 5, 2016

Catholic Service to be Celebrated in the Chapel Royal

What exciting news! The first Catholic service in centuries is to be celebrated in the Chapel Royal!

Jeff Ostrowski · January 5, 2016

| Part 2 of 3 | • “Kyrie Eleison” (SATB) within the reach of any choir!

By the mighty Francisco Guerrero!

Jeff Ostrowski · January 5, 2016

Church Music: True Diversity Vs. False Diversity

Liturgical progressives constantly praise the “stylistic diversity” of the Ordinary Form, but the truth is surprising.

Veronica Brandt · January 2, 2016

Mental Prayer through Hymns

The big misunderstanding about mental prayer illuminated by two different hymns and what you can do about it.

Jeff Ostrowski · January 1, 2016

PDF Download • New Composition By Kevin Allen

This SATB setting of “Jesu Dulcis Memoria” will help you start 2016 on the right foot!

Jeff Ostrowski · January 1, 2016

Update • “Graduale Parvum” (English & Latin)

They have now posted Advent for double-sided printing in book form.

Richard J. Clark · January 1, 2016

Unprecedented • Orthodox Rabbinic Statement on Christianity

I urge you to read this astonishing statement more than once to absorb its magnitude.

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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

When the matter is thus regarded, an assertion which is being made today, not only by laymen but also at times by certain theologians and priests and spread about by them, ought to be rejected as an erroneous opinion: namely, that the offering of one Mass, at which a hundred priests assist with religious devotion, is the same as a hundred Masses celebrated by a hundred priests. That is not true.

— Pope Pius XII (2 November 1954)

Recent Posts

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