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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 · 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.

Jeff Ostrowski · January 26, 2017

PDF Download • “Sing the Angelus” (Plainchant)

Can you think of a better way to begin your choir rehearsals?

Jeff Ostrowski · January 24, 2017

Musical Resources • 4th Sunday after Epiphany

“But the men wondered, saying, What manner of man is this, for the winds and the sea obey Him?”

Jeff Ostrowski · January 23, 2017

More From The New Microphone

This Introit is repeated many times, depending on how many Sundays occur after Epiphany.

Jeff Ostrowski · January 17, 2017

PDF • “The Book of Ceremonies” (629 pages)

By Rev. Laurence J. O’Connell, and *published in English* in 1943.

Jeff Ostrowski · January 16, 2017

Nine Rubrics for Mass in the Extraordinary Form

These rubrics are official; so when does your church begin the Introit?

Jeff Ostrowski · January 16, 2017

Courageous Schola Director Posts “Live” Recording

Our choir is 100% volunteers—and many don’t read music.

Jeff Ostrowski · January 14, 2017

Ratzinger talks “Ad Orientem” (2003)

Cardinal Ratzinger’s English is *fantastic* (as this video shows).

Jeff Ostrowski · January 10, 2017

Musical Resources • 2nd Sunday after Epiphany

“May this Communion, O Lord, cleanse us from sin…”

Jeff Ostrowski · January 9, 2017

“Ten Commandments” • for the Choirmaster

Truth is stranger than fiction.

Jeff Ostrowski · January 6, 2017

PDF Download • Epiphany Booklet (FSSP.la)

To match the ancient acrostic, Erasmus changed the first line to “Herodis Hostes.”

Jeff Ostrowski · January 5, 2017

Best Mystery Movie Of All Time!

Every so often, we stumble across true excellence. Here’s a prime example.

Jeff Ostrowski · January 3, 2017

New Microphone

Please let me know your thoughts in the FB combox…

Jeff Ostrowski · January 3, 2017

Major Problems with “Holy Family” Feast

This feast has been moved *four times* since it was created in 1893…but that’s not my problem.

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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

«In the same quarter where he was crucified there was a garden.» (John 19:41) — The word “garden” hinted at Eden and the fall of man, as it also suggested through its flowers in the springtime the Resurrection from the dead.

— Fulton J. Sheen

Recent Posts

  • “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
  • Solfege Volleyball: A Children’s Choir Game

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