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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 December 2020

Andrea Leal · December 31, 2020

Hymns for the Holy Name of Jesus

Covid-friendly hymns for the Feast of the Holy Name.

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Keven Smith · December 28, 2020

Start the New Year Right with a Spectacular Alleluia

If you attend the Extraordinary Form, the Alleluia for the Octave of the Nativity will enable you to start the New Year with a bang.

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Jeff Ostrowski · December 27, 2020

“Homily — Feast of the Holy Family, Year B” • Father Valentine Young, OFM

I can speak mainly from my experience with Indians, more specifically the Navajos; their native culture has a great respect and love for marriage and family life.

Veronica Brandt · December 26, 2020

Chasing the Little Office of the Blessed Virgin Mary

I thought making a course on singing the Little Office would be an easy project. However, as with just about everything to do with Sacred Music, there is so much more to it than you expect.

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Jeff Ostrowski · December 23, 2020

PDF Download • “Midnight Mass Musical Plan” (2020)

To show our singers how special our music is, I’ve included ancient MSS for each piece—as well as rehearsal videos.

Jeff Ostrowski · December 23, 2020

23 December 2020 • A 5th? or 4th?

I have noticed that where the Editio Vaticana has a descending perfect fourth for the Gradual of Christmas Midnight Mass, many ancient manuscripts have a descending perfect fifth, which is pretty cool: Example A — Example B. The Vatican Edition is a CENTO, and never made any claim to be anything other than a CENTO. […]

Jeff Ostrowski · December 23, 2020

PDF Download • “Creator Alme Siderum” with Organ Accompaniment

The Brébeuf Hymnal provides ancient (Roman Catholic) English translations of this hymn, but Eleanor Parker found versions in Anglo-Saxon!

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Jeff Ostrowski · December 22, 2020

“Improving As Musicians” • Eight Suggestions

Did you know I communicate with dead Catholic composers? I’m not joking.

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Keven Smith · December 21, 2020

Hidden Gem: Alma Redemptoris Mater (Salazar)

Here’s a Spanish Baroque motet that will gradually, gently win your heart while giving your choir another good option for the entire Christmas cycle.

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Daniel Tucker · December 20, 2020

What’s With All the Chant?

I had the honor of presenting this material to my parishioners at St. Thérèse Little Flower Catholic Church last week.

Richard J. Clark · December 20, 2020

Announcement of Easter & the Movable Feasts • 2021 • English & Spanish

The following free downloads in English and Spanish contain dates for 2021 in the score.

William J. Fritz · December 17, 2020

(Installment #15) “Catholic Hymnals” • William Fritz

To (re)Harmonize a Hymn—“Anima Christi” by Dr. Theodore Marier

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Jeff Ostrowski · December 16, 2020

The First Time We’ve Ever Done This Correctly!

Abbot Pothier included a section called “De Ritibus Servandis In Cantu Missae.”

Jeff Ostrowski · December 15, 2020

“Blessing the Bell” • Most Rev’d Alejandro D. Aclan

When a monk hears the bell, he stops whatever he’s doing and immediately goes to prayer. It is the voice of God calling us to pray, to avoid sin, and to forget the things of this world and think of Him.

Richard J. Clark · December 15, 2020

Saint Paul’s Choir School Presents “Starry Night: Christmas in Harvard Square”

A beacon of light in a dark time, the Saint Paul’s Choir of Men and Boys presents “Starry Night: Christmas in Harvard Square”

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Corpus Christi Watershed

President’s Corner

    “Reminder” — Month of April (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
    Simplified Accompaniment (Easter Hymn)
    Number 36 in the Brébeuf Hymnal is “At the Lamb’s high feast we sing,” an English translation for Ad Cenam Agni Próvidi (which was called “Ad Régias Agni Dapes” starting 1631). As of this morning, you can download a simplified keyboard accompaniment for it. Simply click here and scroll to the bottom. Many organists are forced to serve simultaneously as both CANTOR and ACCOMPANIST. In spite of what some claim, this can be difficult—which explains why choirmasters appreciate these simplified keyboard accompaniments. Sadly, many readers will click that link but forget to scroll to the bottom where the simplified PDF file is located.
    —Jeff Ostrowski
    PDF Download • “Quasi Modo Sunday”
    The Introit for “Quasi Modo Sunday” (12 April 2026) is particularly beautiful. The musical score can be downloaded as a PDF file, and so can the organ accompaniment. The official language of the Catholic Church is Latin (whereas Greek is our mother tongue). Vatican II said Gregorian Chant must be given “first place” under normal circumstances. As a result, some parishes will rightly sing the authentic version. On the other hand, because so many USA dioceses disobey the mandate of Vatican II, some musicians sing plainsong in the vernacular. I have attempted to simultaneously accompany myself on the pipe organ while singing the English version. Although very few take advantage of it, the complete Proprium Missae is posted at the flourishing feasts website.
    —Jeff Ostrowski

Quick Thoughts

    PDF Download • “Anima Christi”
    I received a request for an organ accompaniment I created way back in 2007 for the “Anima Christi” Gregorian Chant. You can download this PDF file which has the score in plainsong followed by a keyboard accompaniment. Many melodies have been paired with “Anima Christi” over the centuries, but this is—perhaps—the most common one.
    —Jeff Ostrowski
    PDF • “Liturgical Law” (467 Pages)
    On Good Friday during the middle ages, the pope privately recited THE ENTIRE PSALTER. If you don’t believe me, see for yourself by reading this passage by Dom Charles Augustine Bachofen (d. 1943). His famous book—called “Liturgical Law: A Handbook Of The Roman Liturgy”—was published by the Benjamin Herder Book Company, which was the American arm (operating out of St. Louis, Missouri) of one of the world’s most significant Catholic publishers. Dom Charles Augustine Bachofen was born in Switzerland but spent his career between the Benedictine monasteries at Conception (Missouri) and Mount Angel (Oregon). His 1931 masterpiece, Liturgical Law can be downloaded as a PDF file … 467 pages!
    —Jeff Ostrowski
    “Gregorian Chant Quiz” • 24 March 2026
    How well do you know your Gregorian hymns? Do you recognize the tune inserted into the bass line on this score? For many years, we sang the entire Mass in Gregorian chant—and I mean everything. As a result, it would be difficult to find a Gregorian hymn I don’t recognize instantly. Only decades later did I realize (with sadness) that this skill cannot be ‘monetized’… This particular melody is used for a very famous Gregorian hymn, printed in the LIBER USUALIS. Do you recognize it? Send me an email with the correct words, and I promise to tell everybody I meet about your prowess!
    —Jeff Ostrowski

Random Quote

The effectiveness of liturgy does not lie in experimenting with rites and altering them over and over, nor in a continuous reductionism, but solely in entering more deeply into the word of God and the mystery being celebrated. It is the presence of these two that authenticates the Church’s rites, not what some priest decides, indulging his own preferences.

— Liturgicae Instaurationes (1970)

Recent Posts

  • 2026 Sacred Music Pilgrimage (Washington DC) • With Richard J. Clark
  • “Reminder” — Month of April (2026)
  • “Gregorian Chant Isn’t a Platform for Your Personal Theories, Jeff” • (A Letter We Received)
  • Request From Australia
  • PDF Download • “Anima Christi”

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