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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

PDF Download

Jeff Ostrowski · December 26, 2024

Bizarre Statements From “Leaflet Missal” Founder

Imagine blaming the rise of Adolf Hitler on the Church’s immemorial use of a ‘lingua sacra’ during Mass!

Jeff Ostrowski · December 25, 2024

PDF Download • From Cambridge: “Saint John Fisher Responsorial Psalms Collection” (253 Pages)

This 2024 collection incorporates responsorial psalms by many composers, particularly Catholic composers associated with Cambridge University.

Jeff Ostrowski · December 25, 2024

“Music List” • Midnight Mass (Christmas)

Readers have expressed interest in perusing the “music list” we used at our Christmas Midnight Mass.

Jeff Ostrowski · December 24, 2024

“Silent Night” • Easy Organ Arrangement

Choirs will ‘pick up’ this piece up with minimal rehearsal time.

Jeff Ostrowski · December 23, 2024

PDF Download • “Chart For Each Mode”

If you notice any errors, please let me know!

Corpus Christi Watershed · December 23, 2024

Reader Question • “Extra Verses” for the Propers

Jeff Ostrowski answers a reader’s question with nine (9) statements.

Jeff Ostrowski · December 20, 2024

“Source and Summit” • What Is That?

Notice how Dom Franquesa (without explanation) stealthily annihilates sacrifice, sin, and the adoration we owe God.

Jeff Ostrowski · December 20, 2024

Rorate Caeli + ICEL + Dynamic Equivalence

There’s an old adage: “Once stung, twice shy.”

Jeff Ostrowski · December 19, 2024

“Music List” (4th Sunday of Advent, Year C)

Readers have expressed interest in perusing the “music list” I’ve prepared for this coming Sunday.

Jeff Ostrowski · December 19, 2024

“Entrance Chant” • 4th Sunday of Advent

Like so many Advent antiphons, this one is in the first mode and comes from the prophet Isaiah.

Jeff Ostrowski · December 18, 2024

Communion (4th Sunday of Advent)

It certainly seems like most of the Advent antiphons come from the book of Isaiah…

Jeff Ostrowski · December 18, 2024

PDF Download • New Version of “What Child Is This” (SATB) … as of 18 December 2024

A different version was requested. I was able to complete that task earlier today.

Jeff Ostrowski · December 17, 2024

PDF Download • “Order of Music” (Funerals)

I have made some changes to my “musical list” for funerals.

Jeff Ostrowski · December 17, 2024

PDF Download • “The First Nowell” in Latin — Simplified Version (2024) for Choir & Organ

If you have items you’d like to learn (such as how to make multi-track rehearsal videos) please email them to us.

Jeff Ostrowski · December 13, 2024

PDF Download • “What Child Is This?” (SATB arr.)

In my view, this one falls within the “Top Ten” list of Christmas carols.

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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

    Extreme Unction
    Those who search Google for “CCCC MS 079” will discover high resolution images of a medieval Pontificale (“Cambridge, Corpus Christi College, MS 079”). One of the pages contains this absolutely gorgeous depiction of the Sacrament of Extreme Unction.
    —Corpus Christi Watershed
    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 old Roman rite had the offering by the people and then, as offertory-prayer, what we call the “Secret.” The name “Secreta” means that it was said in a low voice, because the offertory-psalm was being sung. For the same reason it is not preceded by “Oremus.”

— Father Adrian Fortescue

Recent Posts

  • PDF Download • “Funerals in the Ordinary Form”
  • Extreme Unction
  • Which Mass?
  • Like! Like! Like!
  • PDF Download • “Pange Lingua” in Simple (Contemporary) Polyphony for Three Voices

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