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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

Jeff Ostrowski • Article Archive

A theorist, organist, and conductor, Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004). He completed studies in Education and Musicology at the graduate level. Having worked as a church musician in Los Angeles for ten years, in 2024 he accepted a position as choirmaster for Saint Mary of the Immaculate Conception in Michigan, where he resides with his wife and children. —Read full biography (with photographs).

Jeff Ostrowski · September 5, 2024

“Entrance Chant” • For Sunday (8-Sep-2024)

Coming up fast is Sunday, 8 September 2024, which is the 23rd Sunday in Ordinary Time. Here’s the PDF file for the ENTRANCE ANTIPHON—in Gregorian notation on five lines—which we’ll be singing. You can also download this organ accompaniment which corresponds to that file. Plainchant scholars will be interested in the ancient version it mimics […]

Jeff Ostrowski · August 31, 2024

Musical Lineup • (22nd Sund. Ordinary Time)

Jeff’s musical lineup for Sunday, 1 September 2024.

Jeff Ostrowski · August 30, 2024

PDF • “Lamb of God” Harmonization

Harmonized—and carefully notated—in Spanish, English, and Latin.

Jeff Ostrowski · August 30, 2024

Repository • “Spanish Order of Music” (Sainte Marie)

I’ve been creating these for our Spanish Masses. They aren’t perfect—but I’ve also seen worse.

Jeff Ostrowski · August 30, 2024

Leaked Document! • Comparison Chart—New Responsorial Psalms (“Abbey Psalms & Canticles”)

The NAB tried to use “overly casual” language—and the results are often an abomination.

Jeff Ostrowski · August 29, 2024

“3-Voice Arrangement” (SAB) • Psalm 26

Fabulous rehearsal videos have been created for you.

Jeff Ostrowski · August 28, 2024

PDF Download • Seasonal (“Ad Libitum”) Gospel Acclamations for Sundays and Weekdays

The various options given here by the official 1970 Missal can be used during the week (or on any Sunday).

Jeff Ostrowski · August 28, 2024

Meet Kevin Allen In Person!

If you ever wanted to spend a day with Jeff Ostrowski and Kevin Allen, next Tuesday (3-Sept-2024) is your chance! Learn more by clicking here.

Jeff Ostrowski · August 28, 2024

MONTH OF SEPTEMBER — “Reminder”

Each day I speak to folks who have followed our blog for years but (somehow) don’t realize we publish a free newsletter. Please subscribe to it! Simply scroll to the bottom of any blog article and enter your email address. We have no endowment, no major donors, no savings, and refuse to run annoyong ads. Therefore, […]

Jeff Ostrowski · August 27, 2024

When Teaching a Polyphony for the First Time, Use This Three-Voice Piece

The Solfège has already been added, and we made magnificent rehearsal videos for you!

Jeff Ostrowski · August 22, 2024

The Very Least We Can Do!

Today I must ask the infamous question… (ducks)

Jeff Ostrowski · August 20, 2024

“Entrance Chant” • For Sunday (1-Sep-2024)

Coming up fast is Sunday, 1 September 2024, which is the 22nd Sunday in Ordinary Time. Here is the PDF file of the ENTRANCE ANTIPHON—in Gregorian notation on five lines—which we’ll be singing. You can also download this organ accompaniment which corresponds to that file. If you’re somebopdy who enjoys rehearsal videos, you can listen […]

Jeff Ostrowski · August 20, 2024

“The Very Best 42 Seconds of Gregorian Chant”

Fulton J. Sheen, Saint John Mary Vianney, and more!

Jeff Ostrowski · August 19, 2024

“Our Father” • (Arr. for 3 Voices)

This tune has many names such as “Psalm 112” and “Old Hundred Twelfth.”

Jeff Ostrowski · August 19, 2024

Must This Be Accompanied?

The age-old question—will it ever be resolved?

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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

“Church officials frequently asked Tomás Luis de Victoria for his opinion on cathedral appointments because of his fame and knowledge. He was faithful to his position as convent organist even after his professional debut as an organist, and never accepted any extra pay for being a chapelmaster. Held in great esteem, his contract allowed him frequent travel away from the convent, and he attended Palestrina’s funeral (in Rome) in 1594.”

— ‘Dr. Robert Stevenson, 1961 (mod.)’

Recent Posts

  • Music List • (5th Sund. Ordinary Time)
  • PDF • “Communion” (5th Sunday in Ordin.)
  • “Pipe Organ Interlude During Funerals?” • (Reader Feedback)
  • Funeral Music “Template” • For Families
  • “To Cover Sin With Smooth Names”

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