• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

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.”

  • Donate
  • Our Team
    • Our Editorial Policy
    • Who We Are
    • How To Contact Us
    • Sainte Marie Bulletin Articles
    • Jeff’s Mom Joins Fundraiser
    • “Let the Choir Have a Voice” (Essay)
  • Pew Resources
    • Brébeuf Catholic Hymnal
    • Jogues Illuminated Missal
    • Repository • “Spanish Music”
    • KYRIALE • Saint Antoine Daniel
    • Campion Missal, 3rd Edition
  • MUSICAL WEBSITES
    • René Goupil Gregorian Chant
    • Noël Chabanel Psalms
    • Nova Organi Harmonia (2,279 pages)
    • Roman Missal, 3rd Edition
    • Catechism of Gregorian Rhythm
    • Father Enemond Massé Manuscripts
    • Lalemant Polyphonic
    • Feasts Website
  • Miscellaneous
    • Site Map
    • Secrets of the Conscientious Choirmaster
    • “Wedding March” for lazy organists
    • Emporium Kevin Allen
    • Saint Jean de Lalande Library
    • Sacred Music Symposium 2023
    • The Eight Gregorian Modes
    • Gradual by Pothier’s Protégé
    • Seven (7) Considerations
Views from the Choir Loft

President's Corner

Jeff Ostrowski · December 3, 2022

“Do this immediately!” • (Dec. 2022)

December is here! That means I must issue a monthly reminder to all: please subscribe to our free mailing list! It couldn’t be easier: (a) Go to any article; (b) Scroll to the bottom; (c) Enter your email address. We exist solely by the generosity of small donors. We have no endowment; we have no major […]

Jeff Ostrowski · November 28, 2022

28 November 2022 • FEEDBACK

“I can’t thank you enough for that four-part download of the Graduale with 5 lines. That is absolutely brilliant! Since I and another guy from the choir chant the Traditional Propers every Sunday, it has proven to be an invaluable resource. Great job of scanning it, too.” —Email received this morning from S.M.D.

Jeff Ostrowski · November 27, 2022

PDF Download • “1st Sunday of Advent”

Those who accompany VESPERS FOR THE FIRST SUNDAY OF ADVENT may wish to download this draft copy. It’s the organ accompaniment I use, since my parish has Vespers (in the Extraordinary Form) with our congregation each Sunday afternoon. It looks pretty ‘junky’ but it gets the job done. Someday I hope to make a much […]

Jeff Ostrowski · November 26, 2022

“Trochee Trouble” • Say What?

We have posted many articles discussing the French Vs. German way of interpreting syllabic plainsong—which some refer to as “Trochee Trouble.” Needless to say, we encourage everyone to carefully read all those articles. But some folks still don’t understand what “Trochee Trouble” is all about. Therefore, I have created this 1-Page Sheet that explains it […]

Jeff Ostrowski · November 17, 2022

“Progress Made!” • 10-Nov-2022

My volunteer choir has felt the repercussions of this year’s (particularly severe) flu season. Nevertheless, I believe in always—always—giving one’s best as a choir director, even when many singers are absent. You can hear by this brief recording that our singers are starting to blend very nicely. And you can download that choral “warm-up” exercise […]

Jeff Ostrowski · November 16, 2022

Mark Your Calendars!

Have you marked your calendar for Sacred Music Symposium 2023? The dates were recently revealed. You don’t want to miss this! This annual event has gained a reputation as the church music conference par excellence vis-à-vis Catholic musicians “in the trenches.”

Jeff Ostrowski · November 14, 2022

A God We Cannot “See”

By the Incarnation, our Savior’s divinity was hidden. In the Eucharist, according to Saint Thomas Aquinas, our Savior also ‘hides’ His manhood. We cannot see God—although we can see Him (through faith) in the SANCTISSIMUM, in the eyes of the poor, in the grandeur of the mountains, and so forth. Hymn #746 in the Brébeuf […]

Jeff Ostrowski · November 11, 2022

This Coming Sunday’s Introit

You can evaluate my attempt to record this Sunday’s INTROIT according to the official rhythm of the Catholic Church. This INTROIT is very well known because it’s repeated over and over at the end of the year, depending on how many Sundays after Pentecost occur in a particular year.

Jeff Ostrowski · November 5, 2022

4 November 2022 • “Don’t forget!”

Monthly reminder to all: please subscribe to our free mailing list! It couldn’t be easier: (a) Go to any article; (b) Scroll to the bottom; (c) Enter your email address. We exist solely by the generosity of small donors. We have no endowment; we have no major donors; we run no advertisements; we have no savings. […]

Jeff Ostrowski · October 29, 2022

“Christ the King” • Introit

I have attempted to record the Introit for the Feast of Christ the King according to the official rhythm of the Catholic Church. You can view the YouTube recording of my attempt. Traditionally, our Savior’s “kingship” was celebrated as part of the Epiphany—but in 1925, Pope Pius XI created the “feast of Christ the King” […]

Jeff Ostrowski · October 29, 2022

29 October 2022 • FEEDBACK

Good morning! My name is […] and I write to you from Chile. Just a short note to say: thank you for your wonderful website “Corpus Christi Watershed.” As a Catholic organist, I truly appreciate the marvelous work you have done. Your website is a tremendous library open to everyone. Thanks so much, and God […]

Jeff Ostrowski · October 19, 2022

PDF Download • Plainchant on 5 lines!

I can’t think of better way to learn Gregorian chant than to download this 651-page PDF file, containing the marvelous Gregorian Vesperale (1915) by Father Karl Weinmann (d. 1929) printed on five lines. If you accompany Vespers directly from the plainsong notation, this makes life easy! It’s also fun to compare the Gregorian chant inside […]

Jeff Ostrowski · October 15, 2022

This Sunday’s Introit • “Official” Rhythm

Our Schola Cantorum members prefer to hear recordings of chants we’re learning. This morning I attempted this recording of the INTROIT for this coming Sunday, which is the 19th Sunday after Pentecost. My voice was groggy, but I suppose we singers can’t expect to have a recording studio follow us around all day waiting for […]

Jeff Ostrowski · October 13, 2022

PDF Download • “Liber Cantualis”

On 22 November 1963, Pope Paul VI established the “Consociatio Internationalis Musicae Sacrae.” On 16 July 1966, the Vatican reiterated that the Consociatio was “the only international association of sacred music approved by the Holy See.” It’s very difficult—at least for me—to figure out what happened to that organization, and whether it still exists. One […]

Jeff Ostrowski · October 11, 2022

Feedback • “Not Happy With Your Article”

“My name is *******. I wanted to share with you my thoughts on your recent blog post. I was very displeased with this article. […] I’ve have been a supporter of the Latin Mass since I was 14 years old. I’m now 26 and a seminarian; and I very much hope (in the near future) […]

  • « Go to Previous Page
  • Page 1
  • Interim pages omitted …
  • Page 26
  • Page 27
  • Page 28
  • Page 29
  • Page 30
  • Interim pages omitted …
  • Page 41
  • Go to Next Page »

Primary Sidebar

Corpus Christi Watershed

President’s Corner

    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
    Music List • (1st Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I’ve prepared for this coming Sunday—22 February 2026—the 1st Sunday of Lent (Year A). If such a thing interests you, feel free to download it as a PDF file. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the outstanding feasts website alongside the official texts in Latin. I spent an enormous amount of time preparing this ORDER OF MUSIC—because the children’s choir will join us—and some of its components came out great. For example, the COMMUNION ANTIPHON with Fauxbourdon is utterly resplendent, yet still ‘Lenten’.
    —Jeff Ostrowski
    2-Voice Arrangement for Lent
    Those seeking a two-voice arrangement for LENT and PASSIONTIDE should click here and scroll down. It’s based on number 775 in the Brébeuf Hymnal, with an enchanting melody written by Kevin Allen (the legendary American composer of sacred music). That text—“Pendens In Crucis Cornibus”—is often used for the Feast of our Lady of Sorrows. That link is important because, in addition to the musical score, it provides free rehearsal videos for each individual voice: something volunteer choirs appreciate!
    —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

“Partly on account of these alterations, and partly because I have been unable to ascertain the authorship of many compositions—which have come to me either in manuscript or through other collections—I have thought it right to publish the volume without appending the names of writers to their works. This, however, I confess to be a defect…”

— Benjamin Hall Kennedy (1863)

Recent Posts

  • The Weekday Communions of Lent
  • PDF Download • “Atténde Dómine”
  • “Chant Is Not a Penitential Act” • Lenten Reflection by Daniel Marshall
  • (Ash Wednesday) • Medieval Illumination Depicting the Distribution of Ashes
  • Music List • (1st Sunday of Lent)

Subscribe

Subscribe

* indicates required

Copyright © 2026 Corpus Christi Watershed · Isaac Jogues on Genesis Framework · WordPress · Log in

Corpus Christi Watershed is a 501(c)3 public charity dedicated to exploring and embodying as our calling the relationship of religion, culture, and the arts. This non-profit organization employs the creative media in service of theology, the Church, and Christian culture for the enrichment and enjoyment of the public.