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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

PDF Download

Jeff Ostrowski · July 4, 2024

PDF Download • “Entrance Chant” — 14th Sunday in Ordinary Time (Year B)

I’d love to hear you sing this!

Jeff Ostrowski · July 3, 2024

PDF Download • “Funeral Music List” (17 Pages)

What we do undeniably involves a type of “performance.”

Jeff Ostrowski · June 1, 2024

“Lauda Sion” (Sequence) • Too Lengthy, Or Not?

At the end of the American Civil War, nearly 33% of all currency in circulation was counterfeit.

Jeff Ostrowski · May 29, 2024

What Corrinne Did For Us!

A few days ago, our organization scanned and released…

Jeff Ostrowski · May 28, 2024

“Holy God, We Praise Thy Name” (Simplified)

A simplified keyboard accompaniment for pianists struggling to be organists.

Jeff Ostrowski · May 28, 2024

The Church’s Oldest Latin Eucharistic Hymn

May I tell you a secret?

Jeff Ostrowski · May 24, 2024

PDF Download • “Saint Dunstan Hymnal” (158 pages)

How close are Anglicans to Catholics, in terms of their religious practices?

Jeff Ostrowski · May 20, 2024

PDF Download • SATB “Kyrie” for Small Choirs

This SATB setting by Father Francisco Guerrero is brief but magnificent.

Jeff Ostrowski · May 15, 2024

Documentation • “In the Olden Days, Was Vernacular Sung During Liturgical Services?”

Including a splendid harmonization of “Holy God, We Praise Thy Name.”

Follow the Discussion on Facebook

Jeff Ostrowski · May 2, 2024

Singing Bach At Mass? • “Yes! Yes! Yes!”

I wouldn’t argue if somebody made the claim that Sebastian Bach was “the most musical person who ever lived.”

Jeff Ostrowski · April 29, 2024

PDF Download • Simplified Accompaniment for the famous Hymn: “Praise To The Lord”

According to Monsignor Franz Stemmer, the famous hymn “Praise to the Lord” originally came from the 𝘚𝘵𝘳𝘢𝘭𝘴𝘶𝘯𝘥 𝘎𝘦𝘴𝘢𝘯𝘨𝘣𝘶𝘤𝘩 (1665).

Jeff Ostrowski · April 21, 2024

Near “Occasions” of Sin, Forgiveness, Psalms, Hymns, and the Artistic Temperament

Rachmaninoff never forgave Prokofiev for this, as anyone with a melancholic temperament will understand.

Jeff Ostrowski · April 19, 2024

PDF Download • “Wedding Sheet” (Showing Prices)

Being hired as organist or choirmaster for Catholic weddings can be stressful.

Jeff Ostrowski · April 16, 2024

PDF Download • Spanish Responsorial Psalm — “17th Sunday in Ordinary Time” (Year B)

We must never let criticism by ‘haters’ bother us. We must strive to block them from our minds.

Jeff Ostrowski · April 14, 2024

PDF Download • “Freiburg Cathedral Hymnal” (Organ Accompaniment) — 308 Pages!

The most comprehensive German hymnal ever printed? Well, this masterpiece by Monsignor Stemmer is certainly in the top five!

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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 representative Protestant collection, entitled “Hymns, Ancient and Modern”—in substance a compromise between the various sections of conflicting religious thought in the Establishment—is a typical instance. That collection is indebted to Catholic writers for a large fractional part of its contents. If the hymns be estimated which are taken from Catholic sources, directly or imitatively, the greater and more valuable part of its contents owes its origin to the Church.

— Orby Shipley (1884)

Recent Posts

  • “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
  • Solfege Volleyball: A Children’s Choir Game

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