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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

Father Friel • Article Archive

Ordained in 2011, Father Friel served as Parochial Vicar at Saint Anselm Church in Northeast Philly before earning a doctorate in liturgical theology at The Catholic University of America. He presently serves as Vocation Director for the Archdiocese of Philadelphia.—(Read full biography).

Fr. David Friel · July 24, 2016

Priestly Musical Formation in a Low Mass Culture

Reflections from Dr. Jennifer Donelson at Sacra Liturgia UK

Fr. David Friel · July 17, 2016

Are the Readings at Mass Meant to Be Didactic or Doxological?

Reflections from the Fota IX International Liturgy Conference

Fr. David Friel · July 6, 2016

Pope Francis to Cardinal Sarah: Investigate an Official Reform of the Reform

Highlights from Cardinal Sarah’s Lecture at Sacra Liturgia UK 2016

Fr. David Friel · June 24, 2016

Colloquium 2016 • Day 4

Reflections on Offering a Colloquium Mass

Fr. David Friel · June 23, 2016

Colloquium 2016 • Day 3

The Organic Development of the Liturgy and the New Music Breakouts

Fr. David Friel · June 22, 2016

Colloquium 2016 • Day 2

Explanatory Images from Wilko Brouwers

Fr. David Friel · June 21, 2016

Colloquium 2016 • Day 1

A concert of early music by the ensemble “Pro-Arte Saint Louis”

Fr. David Friel · May 29, 2016

Priests as Ordinary Ministers of Holy Communion

A Duty That Is Not Ours to Surrender

Fr. David Friel · May 22, 2016

Guide for Large-Scale Celebrations

10 Points from a Newly Translated Document

Fr. David Friel · May 1, 2016

Regina Chesterton Academy

A Classical Education Track for Catholic High School Students

Fr. David Friel · April 24, 2016

Instruction on Sacred Music by Bishop John Doerfler

Introducing a Five-Year Plan for the Future of Sacred Music in the Diocese of Marquette

Fr. David Friel · April 3, 2016

Which Masses Would You Choose?

If you had the opportunity to add more festive music to selected feasts in the liturgical year, to which would you give preference?

Fr. David Friel · March 20, 2016

Baptisms in the Extraordinary Form

Reflections on a Recent Experience

Fr. David Friel · March 13, 2016

The Rite of Marriage, Second Edition

The release date has been set. What will be new in the new Rite of Marriage?

Fr. David Friel · March 6, 2016

Parish Lenten Programs • 15 Suggestions

Simply adhering to the liturgical traditions of the Church would be a wonderful Lenten program for every parish.

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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

“Today the Church has made a big mistake, turning the clock back 500 years with guitars and popular songs. I don’t like it at all. Gregorian Chant is a vital and important tradition of the Church and to waste this—by having guys mix religious words with profane, Western songs—is hugely grave, hugely grave.”

— Maestro Ennio Morricone (10 Sept 2009)

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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