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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

Jeff Ostrowski • Article Archive

A theorist, organist, and conductor, Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004). He completed studies in Education and Musicology at the graduate level. Having worked as a church musician in Los Angeles for ten years, in 2024 he accepted a position as choirmaster for Saint Mary of the Immaculate Conception in Michigan, where he resides with his wife and children. —Read full biography (with photographs).

Jeff Ostrowski · April 15, 2016

Picture • Pope Pius XII in St. Peter’s (Low Mass)

With a lovely chasuble!

Jeff Ostrowski · April 11, 2016

Sacrament of Confirmation (EF) • “Fully Notated Confirmation Prayers”

You Will Want To Download These! • Written-out (“notated”) sheets for the Rite of Confirmation in the Extraordinary Form.

Jeff Ostrowski · April 10, 2016

Ven. Pope Pius XII Singing The Preface

We normally sing the way we heard the priest singing as a child…

Jeff Ostrowski · April 8, 2016

“Tantum Ergo” • Eleven (11) Harmonizations

Do you know what the “Tantum Ergo” means, word for word?

Jeff Ostrowski · April 7, 2016

“Et Cum Spiritu Tuo” in the 1961 Fulton Sheen Missal

What Fr. Philip Caraman does may surprise you…

Jeff Ostrowski · April 6, 2016

“I confess that I was a liturgical nut” says Bishop consecrated by Pope Paul VI

“The liturgy is not only worship of God; it is the way we are formed in our faith.” —Bishop Gracida

Jeff Ostrowski · April 5, 2016

We Need Assistance! Please Help Watershed Survive!

My 5-part series requesting donations seems to have failed miserably—with a few notable exceptions.

Jeff Ostrowski · April 5, 2016

Mass Propers • Fascinating Articles From 1924

Editors of “The Tablet” felt these essays were horrendous!

Jeff Ostrowski · April 4, 2016

Ward Method Studies • Space Available!

The chant must be sung lightly, and not too slowly.

Jeff Ostrowski · April 4, 2016

“Hymn To The Blessed Virgin Mary” • Caswall & Parry

Choirs not yet ready for SATB hymn singing will love this version for two voices!

Jeff Ostrowski · April 3, 2016

Musical Resources • Low Sunday (1962 Missal)

“In the day of My resurrection, saith the Lord, I will go before you into Galilee…”

Jeff Ostrowski · March 31, 2016

Bishop Doerfler’s Stunning Church Music Letter

“All parishes and schools are to have implemented the following directives by December 31, 2020.” —Bishop Doerfler.

Jeff Ostrowski · March 31, 2016

Mother Angelica • “60 Minutes” (1984)

This video shows Mother Angelica playing the drums at Mass! (Not kidding!)

Jeff Ostrowski · March 30, 2016

“Hail, Holy Queen Enthroned Above” • Nine Organ Accompaniments

Why do we love descants so much?

Jeff Ostrowski · March 29, 2016

Mother Angelica, How Bad Was It?

“To preside, a person must live from the rich ambiguity of symbolic reality.”

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Corpus Christi Watershed

President’s Corner

    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
    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

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

“Gerard Manley Hopkins once argued that most people drank more liquids than they really needed and bet that he could go without drinking for a week. He persisted until his tongue was black and he collapsed at drill.”

— A biography of Fr. Gerard M. Hopkins (d. 1889)

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