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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

Andrew Leung · June 8, 2017

Live Recording from Macau Cathedral

A Live recording of early Renaissance music from the Far East!

Dr. Lucas Tappan · June 6, 2017

Scientia Linguæ Latinæ Voluptatem Et Gaudium Affert!

Unfortunately my avocation of church musician doesn’t allow me to sidestep the Latin vs. vernacular issue any more than a house painter is able to avoid paint.

Corpus Christi Watershed · June 6, 2017

Altar Servers’ Camp • Priestly Fraternity of Saint Peter

In Los Angeles! Learn Solemn Vespers, Low Mass, Pontifical Mass, and more!

Fr. David Friel · June 4, 2017

Thoughts on Benedict

St. Benedict, Pope Emeritus Benedict XVI, and “Ars Celebrandi”

Jeff Ostrowski · June 3, 2017

Musical Resources • Pentecost Sunday 1

“Light most blessèd, shine on the hearts of Your faithful—even into their darkest corners…”

Richard J. Clark · June 2, 2017

Entertainment in the Liturgy and Our True Responsibility

In the words of Kurt Cobain, “Here we are now, entertain us.” Sometimes, our jobs can feel this way. But church musicians have responsibilities that are anything but entertainment.

Jeff Ostrowski · May 30, 2017

Psalm Tones Beyond A Doubt

You will want to download this PDF.

Fr. David Friel · May 28, 2017

The Sequences as Popular Works of Liturgical Creativity

A new article on the Sequences of the Roman Rite in the “Adoremus Bulletin”

Richard J. Clark · May 26, 2017

Pastorally Imperative: They are all we have.

To sing in prayer and with joy is pastorally imperative for they are all we have.

Dr. Alfred Calabrese · May 25, 2017

Josquin Desprez • A Marian Masterpiece

Josquin surely belongs in the pantheon of history’s most important composers.

Jeff Ostrowski · May 25, 2017

Horrible Hymn Rhymes

“Anyone who sought thee, or made to thee his moan…”

Corpus Christi Watershed · May 24, 2017

Promo Video • Upcoming FSSP Ordinations

Seven men will be ordained to the Sacred Priesthood for the FSSP in North America on 26 May 2017.

Dr. Lucas Tappan · May 23, 2017

An Unpleasant Task

I realize it is hard, but perhaps this is the balance we are called to live—truth in charity.

Jeff Ostrowski · May 23, 2017

Rehearsal Videos • “Sanctus & Hosanna” (Guerrero)

Once upon a time, Catholic composers were trained from birth in a special art of musical composition…

Fr. David Friel · May 21, 2017

Antiphon Journal Expands Its Archives

Recent issues now available for preview through Project MUSE.

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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

“Contradictions place us at the foot of the Cross, and the Cross places us at the gates of Heaven.” (Saint John Mary Vianney)

— Cardinal Merry del Val’s Prayer-Book

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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