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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

Flor Peeters

Jeff Ostrowski · February 28, 2025

Re: “Abuse of Catholic Church Musicians”

Listening to yourself singing isn’t fun—but it’s crucial if you wish to improve.

Jeff Ostrowski · August 14, 2024

“Missa de Angelis” • Gloria

Feel free to download this PDF file containing GLORIA VIII (“Mass of the Angels”) harmonized by the great Belgian organist: Flor Peeters.

Jeff Ostrowski · May 16, 2023

PDF Download • César Franck Book of Gregorian Chant Accompaniments (156 Pages)

“The organ is so universally used as an accompanying instrument today that there is a pressing need to provide a written accompaniment…” —César Franck

Jeff Ostrowski · April 17, 2023

“I Came From Somewhere” • (So Did You!)

Including a haunting hymn by Flor Peeters for Eastertide.

Jeff Ostrowski · March 21, 2023

“Go!” • The Word That Changed My Life Forever

As Americans, we’re “bred from birth” to think of ourselves as little gods who already know everything and require no correction.

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!

Jeff Ostrowski · November 29, 2022

“Advent Hymn” • Composed by Flor Peeters

Peeters was organist at Malines Cathedral from 1923 until his death in 1986.

Jeff Ostrowski · September 13, 2022

PDF Download • 2-Voice Eucharistic Hymn by Flor Peeters (45 pages) • Includes a Descant!

Lyrics in English, with an (optional) version in Latin.

Corpus Christi Watershed · August 31, 2022

“This Hymnal Makes My Heart Sing!” —Lauren E.

“It was compiled by priests and musicians who are authentically Catholic…” — Lauren Elizabeth

Jeff Ostrowski · August 30, 2022

PDF Download • “Tantum Ergo” Two-Part Interlude (Manuals Only) by Flor Peeters

Including a stunningly gorgeous (and rare!) hymn by Flor Peeters.

Jeff Ostrowski · August 15, 2022

“Wild Accompaniment” • Flor Peeters (Kyrie VIII)

Kyrie “Missa de Angelis”—recorded yesterday by a volunteer choir.

Jeff Ostrowski · June 11, 2022

Composing Your Own Antiphons?

In the days before Vatican II, dioceses had their own special feast days.

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Corpus Christi Watershed

President’s Corner

    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
    Funeral Music “Template” • For Families
    Many have requested the MUSICAL TEMPLATE for funerals we give to families at our parish. The family of the deceased is usually involved in selecting Number 12 on that sheet. This template was difficult to assemble, because the “Ordo Exsequiarum” has never been translated into English, and the assigned chants and hymns are given in different liturgical books (Lectionary, Gradual, Order of Christian Funerals, and so on). Please notify me if you spot errors or broken links. Readers will be particularly interested in some of the plainsong musical settings, which are truly haunting in their beauty.
    —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 Lord’s Prayer, among the Greeks, is said by all the people; among us, by the priest alone.”

— Pope Saint Gregory the Great

Recent Posts

  • PDF Download • “2-Voice Hymn” (Holy Name)
  • Music List • (5th Sund. Ordinary Time)
  • PDF • “Communion” (5th Sunday in Ordin.)
  • “Pipe Organ Interlude During Funerals?” • (Reader Feedback)
  • Funeral Music “Template” • For Families

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