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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

Articles

Jeff Ostrowski · March 16, 2023

“Lætáre Jerúsalem” • Introit (4th Sunday of Lent)

Sung according to the official rhythm of the Catholic Church.

Jeff Ostrowski · March 15, 2023

“Solesmes Ictus” • Can It Be Justified? (Examples)

“If you begin by telling a man that in a word like 𝐷𝑒𝑢𝑠 the first syllable corresponds to the weak beat, the second to the strong beat of a modern bar, the only thing accomplished will be to bewilder him thoroughly.” —Father Bewerunge

Patrick Williams · March 15, 2023

Ictus Fictus!

“Hardly any of this made-up system has its basis in medieval music theory or in the manuscripts themselves.”—Patrick Williams

Dr. Charles Weaver · March 13, 2023

Rhetoric, Number, Measure, and Historicism

The beginnings of a response to mensuralism from the classic Solesmes point of view.

Dr. Lucas Tappan · March 10, 2023

The Cathedral and Diocese of Leeds Expands Its Musical Outreach Yet Again

In my own diocese, “The Catholic Academy of Sacred Music” was incorporated for that very purpose last summer.

Patrick Williams · March 10, 2023

Gregorian Rhythm Wars • “Clap Your Hands!” (10 Mar 2023)

“With my questions unanswered by those objecting to rhythmic markings based on the oldest sources, it is difficult to take their arguments seriously.” —Patrick Williams

Jeff Ostrowski · March 9, 2023

PDF Download • Belgian “Ordinary of the Mass” (Organ Accompaniment) — 191 pages

This volume has been professionally scanned—and you’ll love the results!

Dr. Charles Weaver · March 7, 2023

Beauty Ever Ancient, Ever New

Every Gregorian melody is a precious gift, and every time we meet a melody again, we have a chance to consider some new aspect.

Andrea Leal · March 7, 2023

PDF Download • “Spanish Missal for the Traditional Latin Mass” (Madrid, 1961) — 860 pages!

Let me explain why this 1961 Spanish Missal is so important.

Matthew Frederes · March 6, 2023

Grant Awarded for Digitizing Over 400,000 Pages of Ancient Solesmes Manuscripts

REPERTORIUM has been awarded a large grant to scan and digitize over 400,000 ancient manuscript images from the Abbey of Saint-Pierre de Solesmes archive.

Jeff Ostrowski · March 5, 2023

Pipe Organ During Lent?

To withdraw the pipe organ no longer has the impact it once did.

Matthew Frederes · March 4, 2023

Alfred Calabrese leads choir on EWTN with Archbishop Cordileone

Sign up today to hear Band of Voices, led by Alfred Calabrese, sing eight Latin motets on EWTN on Saturday, March 11, 2023. Archbishop Cordileone will be offering commentary as a Lenten reflection.

Jeff Ostrowski · March 4, 2023

Crd. Roche Breaks His Silence Re: Cardinal Sarah

Jesus Christ “will not snap the staff that is already crushed, nor put out the wick that still smolders.”

Jeff Ostrowski · March 3, 2023

Absolute Key to a Healthy and “Renewed” Choir

What does it mean to “renew” a choir?

Patrick Williams · March 2, 2023

Patrick’s Second Response to Matthew

“Matthew Frederes is encouraging resistance and asserting that ‘progress trumps antiquity,’ without recognizing that he is resisting both!” —Patrick Williams

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Corpus Christi Watershed

President’s Corner

    PDF Download • “Ubi Caritas” (SATB)
    I remember singing “Ubi Cáritas” by Maurice Duruflé at the conservatory. I was deeply moved by it. However, some feel Duruflé’s version isn’t suitable for small choirs since it’s written for 6 voices and the bass tessitura is quite low. That’s why I was absolutely thrilled to discover this “Ubi cáritas” (SATB) for smaller choirs by Énemond Moreau, who studied with OSCAR DEPUYDT (d. 1925), an orphan who became a towering figure of Catholic music. Depuydt’s students include: Flor Peeters (d. 1986); Monsignor Jules Van Nuffel (d. 1953); Arthur Meulemans (d. 1966); Monsignor Jules Vyverman (d. 1989); and Gustaaf Nees (d. 1965). Rehearsal videos for each individual voice await you at #19705. When I came across the astonishing English translation for “Ubi Cáritas” by Monsignor Ronald Knox—matching the Latin’s meter—I decided to add those lyrics as an option (for churches which have banned Latin). My wife and I made this recording to give you some idea how it sounds.
    —Jeff Ostrowski
    PDF • “Cantus Mariales” (192 pages)
    Andrea Leal has posted an absolutely pristine scan of CANTUS MARIALES (192 pages) which can be downloaded as a PDF file. To access this treasure, navigate to the frabjous article Andrea posted Monday. The file is being offered completely free of charge. The beginning pages of the book have something not to be missed: viz. a letter from Pope Saint Pius X to Dom Pothier, in which the pope calls Abbat Pothier “a man versed above all others in the science of liturgy, and to whom the cause of Gregorian chant is greatly indebted.”
    —Jeff Ostrowski
    Music List • (2nd Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for this coming Sunday, which is the 2nd Sunday of Lent (1 March 2026). If such a thing interests you, feel free to download it as a PDF file. This feast has magnificent propers. Its somber INTROIT is particularly striking—using a haunting tonality—but the COMMUNION with its fauxbourdon verses is also quite remarkable. I encourage all the readers to visit the feasts website, where the Propria Missae may be downloaded completely free of charge.
    —Jeff Ostrowski

Quick Thoughts

    Extreme Unction
    Those who search Google for “CCCC MS 079” will discover high resolution images of a medieval Pontificale (“Cambridge, Corpus Christi College, MS 079”). One of the pages contains this absolutely gorgeous depiction of the Sacrament of Extreme Unction.
    —Corpus Christi Watershed
    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

There is a lack of that kind of organization which favors mature judgment. Move on, move on, get it out. Schemata are multiplied without ever arriving at a considered form. The system of discussion is bad … Often the schemata arrive just before the discussions. Sometimes, and in important matters, such as the new anaphoras, the schema was distributed the evening before the discussion was to take place … Father Bugnini has only one interest: press ahead and finish.

— Cardinal Antonelli (Peritus during the Second Vatican Council)

Recent Posts

  • PDF Download • “Ubi Caritas” (SATB)
  • PDF • “Cantus Mariales” (192 pages)
  • PDF Download • Fourteen (14) Versions of the Splendid Hymn: “Salve Mater Misericordiae”
  • Fulton J. Sheen • “24-Hour Catechism”
  • Music List • (2nd Sunday of Lent)

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