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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 · September 28, 2023

William Byrd • Simple “Agnus Dei” Canon

Time flies! Back in July, I posted a PDF setting of a perfect canon by William Byrd (d. 1623) arranged as an AGNUS DEI for three voices. Last Sunday, we sang that arrangement with our volunteer choir. To hear a ‘live’ recording of it, click here (Mp3). In my humble opinion, this would be a perfect […]

Jeff Ostrowski · September 27, 2023

(Not Kidding) • Does Singing for Mass Fulfill One’s Obligation to Attend Mass?

Jeff Ostrowski provides five (5) responses to an assertion made by a priest.

Jeff Ostrowski · September 26, 2023

PDF Download • All Seven (7) Movements: “Mass in Honor of Saint Noël Chabanel”

My Mass setting for the Ordinary Form involves your Congregation, your Cantrix, and your Choir.

Jeff Ostrowski · September 25, 2023

“Slander!” • (Response to an Accusation We Received)

“Please don’t get cocky and think of your methods as somehow innately superior or universally and inarguably superior in their benefits.” —Email from a Reader

Jeff Ostrowski · September 23, 2023

“Everybody Loves Raymond” Actress Responds to Cardinal Dolan

“The ‘Lamb of God’ can reach the length of a baseball game.” —Cardinal Dolan

Jeff Ostrowski · September 20, 2023

“Glory To God” • (For Choir + Congregation)

I wish to thank everyone for the nice comments I received vis-à-vis my Glory To God setting for Choir & Congregation. A gentleman with a musical doctorate from Indiana University wrote: “Love this setting so much. And I will pray, as you asked, for your return to composition more fully. You are very very good.” […]

Jeff Ostrowski · September 20, 2023

PDF Download • “Glory To God” for Congregation & Choir (Mass of Saint Noël Chabanel)

My setting begins with the entire congregation singing—but the middle section is SATB polyphony.

Jeff Ostrowski · September 19, 2023

Gregorian Chant Introit • (Sung According to the Official Rhythm of the Catholic Church)

This coming Sunday is the 17th Sunday after Pentecost (EF).

Jeff Ostrowski · September 19, 2023

(Quiz) • “How Well Do You Know Your Hymns?”

Including a tip on preventing choirs from ‘sinking’ the pitch lower and lower.

Jeff Ostrowski · September 18, 2023

William Byrd • “Mass for Five Voices”

Our volunteer choir is learning the “Sanctus” from William Byrd’s Mass for Five Voices. You can hear a short excerpt (recorded last Sunday) but please ignore the sound of babies crying: Mp3 recording. We still have work to do—but we’re on the right track. Once we have some of the tuning issues fixed, I desire […]

Jeff Ostrowski · September 17, 2023

“Baptism” • A Unique Hymn

Father Christopher Phillips is the founding Pastor of Our Lady of the Atonement Catholic Church. One of his hymns is unique and (in my humble opinion) quite beautiful. His hymn is basically a prayer to the Holy Trinity but also speaks of Baptism and the Holy Eucharist. It would be an ideal Communion hymn on […]

Jeff Ostrowski · September 15, 2023

For the Record: “Jeff Plays Organ”

Twenty-five years ago, if you’d told me I would end up as an organist, I would have laughed. But God seems to have had a different plan! I intend to record every hymn in the Brébeuf Hymnal on the pipe organ (if our Savior gives me the time and energy). You can hear my first recording […]

Jeff Ostrowski · September 14, 2023

Natália Explains: “Why You Should Care About Shared Melodies.”

Everything’s going great, until you start playing…

Jeff Ostrowski · September 14, 2023

Traditional Latin Mass with Vernacular (!) Ordinary at High Mass in the 1600s

I will let you in on a secret!

Jeff Ostrowski · September 13, 2023

Why Sing? • Byrd Answers!

Make sure to click on the recent article by Dr. Charles Weaver, because he links to something remarkable. In essence, it’s a list—written by William Byrd!—regarding why we should sing.

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Corpus Christi Watershed

President’s Corner

    2-Voice Arrangement for Lent
    Those seeking a two-voice arrangement for LENT and PASSIONTIDE should click here and scroll down. It’s based on number 775 in the Brébeuf Hymnal, with an enchanting melody written by Kevin Allen (the legendary American composer of sacred music). That text—“Pendens In Crucis Cornibus”—is often used for the Feast of our Lady of Sorrows. That link is important because, in addition to the musical score, it provides free rehearsal videos for each individual voice: something volunteer choirs appreciate!
    —Jeff Ostrowski
    “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

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

It is unworthy that the stone holds Him, Who encloses everything in His hand, Locked in by the forbidding rock. (“Indígnum est cujus claudúntur cuncta pugíllo | Ut tegat inclúsum rupe vetánte lapis.”)

— SALVE FESTA DIES (Eastertide)

Recent Posts

  • Fulton J. Sheen • “24-Hour Catechism”
  • 2-Voice Arrangement for Lent
  • Pope Paul VI • “Sacrificium Laudis” (15 Aug 1966)
  • “Sanctus VIII” • Organ Accompaniment
  • PDF Download • Sanctus VIII Organ Accompaniment (“Mass of the Angels”)

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