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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 · November 11, 2025

‘Bogey’ of the Half-Educated: Paraphrase

This is something Monsignor Ronald Knox had to explain time and again…

Jeff Ostrowski · November 11, 2025

Father Cuthbert Lattey • “The Hebrew MSS”

“the ancient Christian versions (and some other ancient sources) seem to have been based upon a better Hebrew text…”

Jeff Ostrowski · November 10, 2025

Re: The People’s Mass Book (1974)

“A Man Can Kill With a Gun, a Bomb, or a Lance…”

Jeff Ostrowski · November 8, 2025

PDF Download • “Music List” for 9 November

Readers have expressed interest in examining the “music list” I prepared for this coming Sunday.

Jeff Ostrowski · November 8, 2025

“Music List” • 9 Nov. (Dedic. Lateran)

Readers have expressed interest in examining the “music list” I prepared for this coming Sunday.

Jeff Ostrowski · November 8, 2025

PDF Download • Offertory (9 Nov.)

“Mother and Head of all churches of the City and of the World” says the inscription over the entrance.

Jeff Ostrowski · November 7, 2025

Job Opening • $65,000 per year +

Exciting job opening in Michigan for a Roman Catholic choir director!

Jeff Ostrowski · November 6, 2025

“Reminder” — Month of November (2025)

Since a new month has arrived, it’s my pleasure to remind you that…

Jeff Ostrowski · November 4, 2025

Never Work For A Priest Or Bishop Who Believes Sacred Music Should Be “Entertainment”

Unsolicited advice for prospective choir directors.

Jeff Ostrowski · November 3, 2025

“Offertory” at Catholic Funerals

This setting cleverly inserts themes from the absolution of the body.

Jeff Ostrowski · November 1, 2025

“In Paradisum” • Gregorian Chant

While the coffin is being carried to the grave, the following anthem is sung.

Jeff Ostrowski · October 31, 2025

“Music List” • All Souls (2 November)

Readers have expressed interest in examining the “music list” I prepared for this coming Sunday.

Jeff Ostrowski · October 29, 2025

2-Voice Arr. • “Creator of the Starry Height”

Over the centuries, this ancient him became associated with the season of Advent.

Jeff Ostrowski · October 29, 2025

“Equal Voices” Choir Pieces

Including a setting of the “Ave Maria” and “Tantum Ergo.”

Jeff Ostrowski · October 25, 2025

Typo in the “Missale Romanum” (1962)

Father Valentine Young, OFM, pointed out many errors and typos in the 1962 Missal.

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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

“How on earth in the [post-conciliar] liturgy for the dead should there be no more mention of sin and expiation? There’s a complete absence of imploring the Lord’s mercy. […] Although the texts were beautiful they were still lacking in the sense of sin and the sense of mercy. But we need this! And when my final hour comes, ask for mercy for me from the Lord, because I have such need of it!”

— Pope Saint Paul VI (3 June 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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