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Corpus Christi Watershed

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Views from the Choir Loft

Mora Vocis

Jeff Ostrowski · July 23, 2026

Calling Dr. Weaver!

A remarkable exposition of the “mora vocis” (published in 1953 in the Netherlands) which doesn’t shy away from a certain item!

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Jeff Ostrowski · December 3, 2024

PDF Download • Pristine Scan: Father Mathias’ 1905 Kyriale Organ Accompaniment (186 pages)

Father Mathias served as organist for Strasburg Cathedral, where he founded the “Saint Leo Institute for Church Music” in 1913.

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Jeff Ostrowski · September 29, 2024

An Anglican “Mess”

If I live to be 100 years old, there’s something I’ll never understand.

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Jeff Ostrowski · November 25, 2022

PDF Download • Traditional Notation Gradual-Book (692 Pages) on Five Lines!

This book makes it easy for singers who only know Treble Clef.

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Jeff Ostrowski · August 8, 2022

PDF Download • “Salve Regina” (32 Versions)

In this article, I examine the elusive provenance of what some have called “the most popular piece of plainsong.”

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Corpus Christi Watershed · July 6, 2022

“Chant Rhythm Wars” • Dueling Lectures!

Ostrowski Vs. Weaver: Solesmes Rhythm, Gregorian Semiology, Dom Mocquereau, Dom Pothier, Mensuralism, and more!

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Jeff Ostrowski · April 30, 2022

A “Dirty” Word (For Musicians)

Around the year 1955, “transcription” became a dirty word.

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Jeff Ostrowski · August 8, 2021

8 August 2021 • “More on the Moræ”

If you look at the 1961 Solesmes Gradual for the 11th Sunday after Pentecost, you will see that somebody in the 1960s was trying to figure out the “melismatic moræ vocis” (a.k.a. “Vaticana white notes”) which we have spoken of so frequently on this blog.

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Jeff Ostrowski · May 17, 2021

“Slanty Wampus” Doesn’t Count

From one of my composition teachers…

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Corpus Christi Watershed

President’s Corner

    Sacred Music “Pro Tip”
    Our website welcomes millions of visitors, yet surprisingly few find their way to the actual blog page itself. If you are among them, bookmark it today. Numerous articles and resources await you—but these treasures belong to those who explore each article, not merely its title. The headline is only the doorway; the substance lies within.
    —Jeff Ostrowski
    Music List • (29th Sund. Ordinary Time)
    Readers have expressed interest in seeing the ORDER OF MUSIC which I created for this coming Sunday, the 29th Sunday in Ordinary Time (Year A). If such a thing interests you, feel free to download it as a PDF file. The INTROIT for this Sunday explains why this Sunday is called “Apple Sunday.” As we approach the end of the liturgical year, most of the INTROITS seem to be in Mode III or Mode IV, which are ‘haunting’ tones.
    —Jeff Ostrowski
    “Holy, Holy, Holy” transposed lower

    A simple setting based on a work by Canon Jules Vyverman.

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    —Jeff Ostrowski

Quick Thoughts

    PDF • “Singers’ Booklet” (26 Pages)

    This is a ‘messy’ booklet in terms of its formatting, but it’s only ever seen by the singers—not members of the congregation.

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    —Jeff Ostrowski
    Preface of Saint Joseph (added by the pope)

    You can see the “Præfatio de Sancto Joseph” inserted directly into the priest’s missal.

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    —Jeff Ostrowski
    “Predictable Rhymes?” • A Follow Up
    We received considerable correspondence regarding my article, Two Ways to Defile a Hymn. More specifically, what really raised certain people’s hackles was its follow-up article dealing with the keyboard accompaniment for the CHRIST THE KING HYMNAL. But to quote Eliza Doolittle: “Have I said anything I oughtn’t?” Please examine this PDF file and see whether you agree. Were the editors of the BRÉBEUF HYMNAL incorrect to insist upon sophisticated and clever rhymes, rather than mind-numbingly predictable rhymes?
    —Jeff Ostrowski

Random Quote

“In accordance with the ancient tradition of the Church, institution to the ministries of reader and acolyte is reserved to men.”

— Pope Saint Paul VI (15 August 1972)

Recent Posts

  • PDF • “Singers’ Booklet” (26 Pages)
  • Sacred Music “Pro Tip”
  • PDF Chart (33,344 words) • “Graduale Romanum”—Spanish, English: Multiple Approved Translations
  • Music List • (29th Sund. Ordinary Time)
  • Ordinary of the Mass (Spanish Settings) for Organ + Congregation • “We’ve Had Success With These”

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