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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

Propers

Richard J. Clark · May 9, 2014

The Pipe Organ and Propers Flourish with Vexo and Weismann

While the pipe organ languishes in some places, it flourishes in others. There are three reasons why.

Richard J. Clark · March 5, 2014

Misereris omnium | Ash Wednesday Introit

Few parishes are willing to sing Gregorian Introits for the Entrance Procession, but it is SIGNIFICANT that the very first Introit of Lent sings of God’s infinite MERCY.

Veronica Brandt · March 1, 2014

Preparing for Lent

Renewing the adventure of exploring Gregorian chant by making recordings.

Richard J. Clark · January 17, 2014

Gregorian Propers at a Nuptial Mass in “Southie”?

“Southie” is a section of Boston better known from the films “Good Will Hunting” and “The Departed.” It is also infamous for the convicted murderer and gangster, James “Whitey” Bulger. But, yes, glorious Gregorian Propers, polyphony, and hymnody at a Nuptial Mass in “Southie.”

Richard J. Clark · January 10, 2014

Improvising – and Praying – on the Propers

A close friend, a priest once told me years ago something I’ve never forgotten. “The people don’t need to know what it is to understand it.” They will understand the prayer interiorly if not in words. Since hearing that, I have always thought it important to play and pray music related to a relevant text.

Richard J. Clark · December 6, 2013

Chris Mueller’s Unique Voice in the Propers

Chris Mueller has a very unique collection of Offertory Propers in English. He refers to them as “miniatures”, but each is unique revealing a depth of character that gives them lasting power.

Fr. David Friel · December 1, 2013

Chant Behind Bars

Might Chant Scholas Flourish in Prisons?

Richard J. Clark · November 29, 2013

A Challenge for the “Big Three” — Is there a Market for the Propers?

I have a challenge to the “Big Three” publishers. The propers are the new frontier of liturgical composition. I propose that they get ahead of the curve now.

Richard J. Clark · November 22, 2013

Saint Cecilia and Why the Word is Preeminent

I confront a challenge most musicians of sacred music face: the battle between the Word and musical “feel.” From the Word, emanates a life: all that is love, all that is beauty, all that is sacrifice and service to God.

Richard J. Clark · March 20, 2013

Free Communion Propers for the Easter Season, Year C

Free download of Communion Propers for the Easter Season, Year C

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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 Princess of the Palatinate once described German Protestantism to Louis XIV with this formula: “In our country, everyone makes up his own little religion.” Every priest, or almost every priest, is at this point today. All the faithful have to say is “Amen.” They are still blessed when the pastor’s religion does not change every Sunday, at the whim of his reading, the foolery he has seen others at, or at his own pure fancy.

— Professor Louis Bouyer (1968)

Recent Posts

  • Pope Paul VI • “Sacrificum 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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