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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 · July 27, 2016

Musical Resources • 11th Sunday after Pentecost

“…pour forth Thy mercy upon us, to take away from us those things which our conscience feareth…”

Jeff Ostrowski · July 26, 2016

Victoria Alleluia • Extraordinary & Ordinary Form

If your priest requires the congregation sing the “Alleluia,” there’s a nice way to do this.

Jeff Ostrowski · July 24, 2016

Musical Resources • 10th Sunday after Pentecost

“O God, Who dost chiefly manifest Thy power in forbearance and mercy…”

Jeff Ostrowski · July 20, 2016

PDF Download • St. Cecilia Hymnal (1937)

Like all the books we release, this extremely rare hymnal was previously unavailable until we scanned and uploaded it.

Jeff Ostrowski · July 17, 2016

Showdown in Arkansas over “Ad Orientem”

The Bishop of Little Rock has sent a letter (14 July 2016) forbidding his priests to celebrate Mass “ad orientem.”

Jeff Ostrowski · July 16, 2016

Musical Resources • 9th Sunday after Pentecost

“…and that Thou mayest grant their desires to them, make them ask only for things that please Thee…”

Jeff Ostrowski · July 13, 2016

Shocking Developments From Westminster

If Cardinal Nichols had simply sent a letter saying why he prefers “versus populum,” I believe that would have been a better choice.

Jeff Ostrowski · July 13, 2016

SATB “Agnus Dei” after Fr. Gregorio Allegri (d. 1652)

Without question, the most popular piece I ever “wrote.”

Jeff Ostrowski · July 12, 2016

Did Fr. Lombardi Contradict Cardinal Sarah?

Perhaps a better phrase would be Bishop Gracida’s version: “Renewal of the Renewal.”

Jeff Ostrowski · July 9, 2016

“Quam Singulari” • Decree on First Communion (1910)

Pope St. Pius X wanted this decree to be read each year from the pulpit by all Catholic priests.

Jeff Ostrowski · July 6, 2016

Sensational Hymn for St. Joseph … with Modern Polyphony!

We’ll be singing this piece a lot because our priest has a special devotion to St. Joseph.

Jeff Ostrowski · July 2, 2016

“Confiteor” Before Communion • Should It Be Done?

Six reasons in favor of the “Second Confiteor” and my thoughts.

Jeff Ostrowski · June 29, 2016

“Salve Virgo Singularis” • For Three Voices

I cannot imagine a more powerful text.

Jeff Ostrowski · June 27, 2016

Wow! Take 35% off your purchase!

The Goupil Graduals arrived this morning, and they look marvelous!

Jeff Ostrowski · June 27, 2016

Audio Samples • Can A Volunteer Choir Sing Excellent Music At Mass?

If you think we weren’t nervous to sing before so many … think again!

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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

“When there are women members, the choir’s place is to be outside the sanctuary.”

— “Musicam Sacram” (5 March 1967)

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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