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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 · May 16, 2016

The Terrifying “But” Of Vatican II

Only four (4) bishops voted against the Vatican II document on liturgy.

Jeff Ostrowski · May 15, 2016

Blast From The Past!

What did the Traditional Latin Mass look like sixteen years ago?

Jeff Ostrowski · May 13, 2016

Musical Resources • Pentecost Sunday

“O God, Who on this day didst instruct the hearts of the faithful by the light of the Holy Spirit…”

Jeff Ostrowski · May 11, 2016

Rehearsal videos • “Come, Holy Ghost” (SATB)

Pentecost is coming—are you ready?

Jeff Ostrowski · May 10, 2016

Fox News • “Rise of the Latin Mass”

“To be honest, I wasn’t a fan at first…but now I love it.” —Brenda DiGirolamo

Jeff Ostrowski · May 8, 2016

Musical Resources • Sunday after the Ascension (Extraordinary Form)

“Almighty and eternal God, make us ever bear a devout affection toward Thee…”

Jeff Ostrowski · May 7, 2016

A Special “Gaudeamus” For 31 May

Nobody has been able to explain why they changed the psalm verse…

Jeff Ostrowski · May 4, 2016

Does Gregorian Chant Work In English?

“In a musical phrase, each element is a part of the whole and must take its place in that whole.” —Dom Gajard

Jeff Ostrowski · May 2, 2016

What Modern Man Cannot Ever Accept: SILENCE

“I believe that more and more people will start to come to this, if nothing else because they wish to find a way in their world to carve out quiet time.”

Jeff Ostrowski · May 1, 2016

Musical Resources • St. Joseph the Worker (1 May)

“Grant, O Lord, that what we have received may—by the intercession of blessed Joseph—crown our work and confirm our reward…”

Jeff Ostrowski · April 27, 2016

Propers for St. Joseph the Worker

This Sunday falls on May 1st, so the EF feast is “St. Joseph the Workman.”

Jeff Ostrowski · April 25, 2016

Rehearsal videos • “Veni Creator Spiritus” (Fauxbourdon)

Modern ears don’t always enjoy the sound of extremely ancient music—do you?

Jeff Ostrowski · April 24, 2016

Musical Resources • Fourth Sunday after Easter (Extraordinary Form)

“…grant Thy peoples that they may love what Thou commandest and desire what Thou dost promise…”

Jeff Ostrowski · April 24, 2016

Our Lady’s Royal Ancestry • Gregorian Chant

“Richer than I you can never be—I had a Mother who read to me.”

Jeff Ostrowski · April 23, 2016

Dazzling Canon • “Adoremus in Aeternum”

John Paul II: “For compositions of liturgical music, I make my own the general rule of St. Pius X…”

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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

By far, the event that caused the biggest increase in requests for indults from the morning Mass requirement was the Second World War. The unusual requirements of providing Mass during wartime led to some unique legislation accommodating the time of Mass. Already in 1940, Pope Pius XII issued a motu proprio addressing the situation of holding Mass in countries where a “Black-out” had been ordered.

— Father Shawn P. Tunink

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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