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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 · March 3, 2017

Choirmasters, Your Job Is Hard Beyond A Doubt

What does sacred music have to do with the O. J. Simpson murder trial?

Jeff Ostrowski · February 28, 2017

Giacomo Cardinal Lercaro (1891-1976)

“There remains throughout the presence of Bugnini—his bias, his anger, and his prejudice—making one continuously ask the unanswerable question: why?” ~ Msgr. Richard J. Schuler

Jeff Ostrowski · February 22, 2017

“Morae Vocis” acc. to the Vatican Edition

The «Kyriale» contains very few melismatic morae.

Jeff Ostrowski · February 21, 2017

PDF Download • “Cantus Varii” (469 Pages)

The revolution continues!

Jeff Ostrowski · February 20, 2017

2-1 Suspension in Guerrero Motet

“Now this is eternal life: That they may know thee, the only true God, and Jesus Christ, whom thou hast sent.”

Jeff Ostrowski · February 18, 2017

Musical Resources • Sexagesima Sunday 1

“O God, who seest that we put no trust in ourselves…”

Jeff Ostrowski · February 13, 2017

Refutations • “Can the Latin Mass be enriched?”

The OF can enrich the EF, but not the way Fr. Stravinskas describes.

Jeff Ostrowski · February 11, 2017

Who I Am

Vladimir Horowitz was especially known for this ability.

Jeff Ostrowski · February 9, 2017

“A Trip to the Sacred Music Symposium” • (Film)

Two young ladies in high school created this video as part of a school project.

Jeff Ostrowski · February 7, 2017

Musical Resources • Septuagesima Sunday 1

“Or, is it not lawful for me to do what I will? Is thine eye evil, because I am good?”

Jeff Ostrowski · February 6, 2017

Pope Benedict XVI on this Sunday’s Introit

“The virgin mother bound his limbs in swaddling clothes; such bands held the hands and feet of God!”

Jeff Ostrowski · February 5, 2017

“The Return of the SSPX”

Reflections by a member of the Priestly Fraternity of Saint Peter.

Jeff Ostrowski · February 3, 2017

Did we meet our fundraising goal?

The answer will amaze!

Jeff Ostrowski · January 31, 2017

Photos • Society for Catholic Liturgy Conference

After Mass, a presentation was delivered by the Executive Director of the USCCB Committee on Divine Worship.

Jeff Ostrowski · January 30, 2017

Mind-Blowing SATB Canon

“Laudate Dominum” by William Croft (†1727) is a miracle.

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Corpus Christi Watershed

President’s Corner

    PDF • “Cantus Mariales” (192 pages)
    Andrea Leal has posted an absolutely pristine scan of CANTUS MARIALES (192 pages) which can be downloaded as a PDF file. To access this treasure, navigate to the frabjous article Andrea posted Monday. The file is being offered completely free of charge. The beginning pages of the book have something not to be missed: viz. a letter from Pope Saint Pius X to Dom Pothier, in which the pope calls Abbat Pothier “a man versed above all others in the science of liturgy, and to whom the cause of Gregorian chant is greatly indebted.”
    —Jeff Ostrowski
    Music List • (2nd Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for this coming Sunday, which is the 2nd Sunday of Lent (1 March 2026). If such a thing interests you, feel free to download it as a PDF file. This feast has magnificent propers. Its somber INTROIT is particularly striking—using a haunting tonality—but the COMMUNION with its fauxbourdon verses is also quite remarkable. I encourage all the readers to visit the feasts website, where the Propria Missae may be downloaded completely free of charge.
    —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

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

“If I could only make the faithful sing the Kyrie, the Gloria, the Credo, the Sanctus, and the Agnus Dei…that would be to me the finest triumph sacred music could have, for it is in really taking part in the liturgy that the faithful will preserve their devotion. I would take the Tantum Ergo, the Te Deum, and the Litanies sung by the people over any piece of polyphony.”

— ‘Giuseppe Cardinal Sarto, Letter to Msgr. Callegari (1897)’

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