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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

Featured

Fr. David Friel · July 5, 2015

Vesting Prayers • Part 1 of 9

Over the coming weeks, I will present a series of reflections on the vesting prayers.

Veronica Brandt · June 20, 2015

Wrapped in the Liber Usualis

A scarf adorned with pages from the Liber Usualis. Why not?

Follow the Discussion on Facebook

Jeff Ostrowski · May 1, 2015

Twelve (12) PDF Guides To Pronouncing Latin

Fr. Carlo Rossini’s is probably the best, but 11 more are also provided.

Jeff Ostrowski · April 2, 2015

An Essential & Unique Thing For Holy Thursday

…and a look at Holy Thursday from the 1965 Missal.

Fr. David Friel · February 8, 2015

Pastoral Difficulties with Recently Ordained Priests

A Response to a Post at “Pray Tell”

Jeff Ostrowski · August 12, 2014

Some Thoughts On “Englishing” Gregorian Chant

But why bring up this subject at all, when probably 95% of Catholic priests have no familiarity with Gregorian chant? • concerning the challenges of composing Gregorian chant in English+

Jeff Ostrowski · August 11, 2014

Mass Propers In English

Roosevelt was President while paralyzed. Churchill gave speeches but couldn’t pronounce “S” correctly. Surely, then, we can implement the Mass Propers with these 11 collections! • the Graduale Romanum has been set in English by many composers; here are some collections with audio samples+

Fr. David Friel · July 13, 2014

The “Children’s Liturgy of the Word”

Are We Past This Yet?

Jeff Ostrowski · June 12, 2014

Antiphons in the Gradual don’t match the Roman Missal, 3rd edition?

Why aren’t the Propers from the Roman Gradual identical to the Mass Propers printed in the Roman Missal? • “Recent research … has made it clear that the antiphons of the Order of Mass were never intended to be sung.” — Bishop Donald Trautman (2007)+

Jeff Ostrowski · February 17, 2014

PDF Download • 1974 “Graduale Romanum”

“How can we celebrate this new rite when we have not yet got a complete missal, and there are still so many uncertainties about what to do?” — Pope Paul VI (1969 General Audience)+

Fr. David Friel · January 26, 2014

Comparing Canons

Does Using Eucharistic Prayer II Really “Save Time”?

Corpus Christi Watershed · March 19, 2013

Free Download • “Liber Usualis” PDF Online (Solesmes, 1961)

Free PDF download of the complete “Liber Usualis with Introduction and Rubrics in English—with IMPRIMATUR dated 7 February 1961—edited by the Benedictine Monks of Solesmes+

Fr. David Friel · February 10, 2013

Lovely, If Unfamiliar

Duc in Altum

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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 traditions of the elders, your glory throughout long ages, must not be belittled. Indeed, your manner of celebrating the choral office [in Latin] has been one of the chief reasons why these families of yours have lasted so long, and happily increased.”

— Pope Saint Paul VI (15 August 1966)

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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