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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

Sacred Music Colloquium

Jeff Ostrowski · October 22, 2021

PDF Download • “Wedding Booklet” (22 pages)

A word about “Kleptomaniac Choirmasters.”

Fr. David Friel · May 9, 2021

Virtual Sacred Music Colloquium 2021

Alongside many familiar faces, several new presenters are joining the faculty this year.

Follow the Discussion on Facebook

Fr. David Friel · June 11, 2020

Virtual Sacred Music Colloquium 2020

The CMAA will offer a virtual version of its annual, week-long workshop.

Follow the Discussion on Facebook

Fr. David Friel · June 25, 2017

Composition with Pencil & Paper or Computer Software?

A lunch-time conversation at Sacred Music Colloquium 2017 in St. Paul, MN

Fr. David Friel · May 7, 2017

Fota X Conference (and other Summer Opportunities)

Summer 2017 looks to be a blockbuster period for sacred music activity.

Fr. David Friel · April 16, 2017

Introducing the Wethersfield Institute Chant Workshop

A new chant workshop in upstate New York in June 2017.

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”

Jeff Ostrowski · November 24, 2015

Our Church Music Movement: How Are We Doing?

I never dreamed that so many people love this stuff…and are willing to fight for it!

Fr. David Friel · March 15, 2015

The Future of the Pipe Organ

“The manifold possibilities of the organ remind us of the immensity and the magnificence of God.” (Pope Benedict XVI)

Fr. David Friel · November 16, 2014

Colloquium Friends & Chant Workshops

“Adventus Dona” in the Diocese of San Diego

Fr. David Friel · November 9, 2014

Sacred Architecture & the Dedication of the Lateran Basilica

When we come to church, there should be no question whether we are in a church or in a coffeehouse or in a multipurpose gym.

Fr. David Friel · July 8, 2014

Colloquium Roundup

How to Experience Colloquium XXIV Belatedly and From Afar

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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

“These French offices represent a new case of the old tendency towards local modification—which the Council of Trent had meant to repress. They are commonly attributed to Gallican ideas and are supposed to be not free from Jansenist venom. Some of these local French uses survived almost to our own time. They were supplanted by the Roman books in the 19th century, chiefly by the exertions of Dom Prosper Guéranger (d. 1875).”

— Dr. Adrian Fortescue (d. 1923)

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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