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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 7, 2015

Short, Fresh, & Beautiful • SATB “Ave Maris Stella”

This piece by Fr. Antonin Lhoumeau will knock your socks off!

Jeff Ostrowski · July 6, 2015

The Beauty Of Ancient Catholic Manuscripts

Medieval manuscripts were normally created by (at least) two monks: one drew, one wrote.

Jeff Ostrowski · July 4, 2015

Musical Resources • 6th Sunday after Pentecost (Extraordinary Form)

The organist will play softly at the Offertory.

Jeff Ostrowski · July 4, 2015

Clarence Thomas: “I waited 25 years to return to the Church”

“Older people have an obligation not to spew their cynicism on our youth.” —Justice Thomas

Jeff Ostrowski · July 2, 2015

Annibale Bugnini’s Commentary (June 1967)

“The faithful everywhere have responded generously, and have greeted the new liturgy with great joy.” —Archbishop Bugnini (1967)

Jeff Ostrowski · July 1, 2015

Only Priests Can Save Catholic Music

Including thirteen (13) complete collections of Mass Propers…with audio examples!

Jeff Ostrowski · June 28, 2015

Loading Choir Binders In Los Angeles

I average one binder per second.

Jeff Ostrowski · June 26, 2015

Musical Resources • 5th Sunday after Pentecost (Extraordinary Form)

The organist will play softly at the Offertory.

Jeff Ostrowski · June 24, 2015

PDF Download • “Gloria In Excelsis” With 3-Voice Polyphony By Cristóbal De Morales

Could this have something to do with how each line comes through “cleanly” in 3-part music?

Jeff Ostrowski · June 24, 2015

Clearest Explanation Ever! —Bishop Gracida On Divorce & Remarriage For Catholics

“It is better to speak of a Declaration of Nullity rather than an Annulment…” —Most Rev. Gracida (1994)

Jeff Ostrowski · June 22, 2015

EWTN Classic • “Theology of Worship” with Fr. Robert Skeris (1998)

Mother Angelica sat down for a wonderful interview with a famous Theologian.

Jeff Ostrowski · June 22, 2015

Richard Rice • SATB Kyrie from Mass VIII

A luxuriant choral setting of the Kyrie from “Mass of the Angels”

Jeff Ostrowski · June 21, 2015

Musical Resources • 4th Sunday after Pentecost (Extraordinary Form)

The organist will play softly at the Offertory.

Jeff Ostrowski · June 17, 2015

Does Having Children Preclude Service As A Catholic Musician?

Here are some thoughts, but I can’t promise they make sense.

Jeff Ostrowski · June 17, 2015

SATB “Agnus Dei” by Verdelot with Rehearsal Videos

Who wouldn’t welcome a brief-but-beautiful piece like this?

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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

“The sacrificial death of Jesus Christ the High Priest on Calvary is and will remain the basis for the active participation of the faithful in the liturgy. Membership in the Church, which is brought about by valid baptism, makes one a part of the Mystical Body of Christ, THE PRIEST, to whose priesthood one is interiorly conformed through the baptismal character.”

— “Divini Cultus Studium” (Dr. Robert A. Skeris, 1990)

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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