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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 · December 17, 2014

PDF Download: Hymns of the Dominican Missal & Breviary • Fr. Aquinas Byrnes (1943)

Containing literal and poetic translations, author biographies, meter explanations, and much more!

Jeff Ostrowski · December 17, 2014

How Well Did Your Parents Know The Mass?

PDF Download: Order of Mass (Latin & English) printed in THE CROWN HYMNAL of 1911.

Jeff Ostrowski · December 15, 2014

“The Gloves Are Off” — Jonathan Gruber & The Traditional Mass

“The faith of many was quite infantile, I would say.” —Paul Inwood, talking about preconciliar Catholics

Jeff Ostrowski · December 13, 2014

“The Experience After The Council Was So Strong And In Some Cases Violent…” —Cardinal Burke

6 December 2014 interview with Raymond Leo Cardinal Burke by GloriaTV.

Jeff Ostrowski · December 13, 2014

Musical Resources • 3rd Sunday of Advent

Including “Creator Alme Siderum” with English Translation by Rev. Adrian Fortescue.

Jeff Ostrowski · December 11, 2014

What They Didn’t Tell You About Psalm Tone VIII

Even the “Liber Usualis” omits critical information about Tone VIII.

Jeff Ostrowski · December 10, 2014

Review: An English Gradual (Belmont Abbey, 2013)

For myself, I prefer the liturgy entirely in Latin or entirely in the vernacular. Others will disagree.

Jeff Ostrowski · December 9, 2014

Any Hope For Modern Catholic Hymnody? Yes!

Major publishers include Haugen’s verse “not in some heaven, light-years away”—what can be done about it?

Jeff Ostrowski · December 8, 2014

The Polyphonic Piece Your Choir Has Been Desiring!

As an added bonus, the score contains solfege markings!

Jeff Ostrowski · December 6, 2014

Musical Resources • 2nd Sunday of Advent

Including scores, audio files, and organ accompaniments.

Jeff Ostrowski · December 5, 2014

Latin Mass In Los Angeles • THIS SUNDAY!

“I’m not one of those Novus Ordo = bad, Tridentine = good people…” —Carlos de Quesado

Jeff Ostrowski · December 3, 2014

The Actual Authentic Writing Of Palestrina

Colin Mawby, former Master of Music at Westminster Cathedral, travels to Rome in this video, letting you see an original manuscript of Palestrina.

Jeff Ostrowski · December 1, 2014

The Current Missal Specifies When To Face the Altar & When To Face The People

The phrase “ad populum conversus” does appear in the postconciliar books, and no amount of polemical articles can change this fact.

Jeff Ostrowski · November 29, 2014

Tutorial For Priests: Singing The Prayers After The “Asperges Me”

Priests often unknowingly drift into another tone, which is not allowed.

Jeff Ostrowski · November 26, 2014

Musical Resources • 1st Sunday of Advent

Including scores, audio files, and organ accompaniments.

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Corpus Christi Watershed

President’s Corner

    “Sanctus VIII” • Organ Accompaniment
    A few days ago, I composed this organ harmonization for SANCTUS VIII. This Mass is traditionally called Missa de ángelis or “Mass of the angels.” In French, it is Messe de Anges. You can evaluate my attempt to simultaneously accompany myself on the pipe organ (click here) while singing the melody. My parish is currently singing this setting.
    —Jeff Ostrowski
    Music List • (5th Sund. Ordinary Time)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for this coming Sunday, 8 February 2026, which is the 5th Sunday in Ordinary Time (Year A). If such a thing interests you, feel free to download it as a PDF file. You will probably notice it isn’t as ‘complete’ or ‘spiffy’ as usual, owing to some difficulties which took place this week.
    —Jeff Ostrowski
    PDF • “Communion” (5th Sunday in Ordin.)
    The COMMUNION ANTIPHON for this coming Sunday, 8 February 2026—which is the 5th Sunday in Ordinary Time (Year A)—is truly delightful. You can download the musical score completely free of charge. This text will be familiar to altar boys, because it’s PSALM 42. The Feder Missal makes the following claim about that psalm: “A hymn of a temple musician from Jerusalem: he is an exile in a heathen land, and he longs for the holy city and his ministry in the Temple there. The Church makes his words her own.”
    —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

“Of course, the new [Easter Vigil] liturgy has greatly streamlined the symbology. But the exaggerated simplification has removed elements that used to have quite a hold on the mindset of the faithful. […] Is this Easter Vigil liturgy definitive?”

— Paul VI to Virgilio Noè (10 April 1971)

Recent Posts

  • Pope Paul VI • “Sacrificium Laudis” (15 Aug 1966)
  • “Sanctus VIII” • Organ Accompaniment
  • PDF Download • Sanctus VIII Organ Accompaniment (“Mass of the Angels”)
  • Gorgeous Image of Monks Singing!
  • “Let the Choir Have a Voice” • Jeff Ostrowski’s Essay on Choral Music in the Catholic Mass

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