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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 · December 11, 2017

Advent Piece for 2 Voices

Multi-Track recording created by a high school sophomore.

Jeff Ostrowski · December 8, 2017

PDF Download • Immac. Conception Booklet

“He whom the whole world cannot contain was enclosed in thy womb…”

Jeff Ostrowski · December 7, 2017

“Creator Alme Siderum” (Guerrero)

The famous plainsong tune can be played on a Woofer Guitar.

Jeff Ostrowski · December 6, 2017

Holy Purity & Anger

Our seminarians and priests taught us about “captivity of the eyes.”

Jeff Ostrowski · December 6, 2017

Quickest Psalm Tone Ever Created

A nicely done Psalm Tone is preferred to a poorly sung authentic version.

Jeff Ostrowski · December 5, 2017

Rorate Caeli • “Very Ancient Catholic Song”

This Catholic hymnal was written by a priest named “Police.” (not kidding)

Jeff Ostrowski · December 3, 2017

2nd Sunday of Advent (2nd of December)

Jesus began to say to the multitudes concerning John: “What went you out into the desert to see?”

Jeff Ostrowski · December 1, 2017

360º Footage of Vespers • How cool is this?

Fr. Valentine used to say: “If you don’t blow your own horn, nobody else is going to blow it for you.”

Jeff Ostrowski · November 29, 2017

Msgr. Knox • “Ten Commandments” for Crime Stories

Knox was a founding member of the “Detection Club,” which included Agatha Christie and G. K. Chesterton.

Jeff Ostrowski · November 29, 2017

PDF Download • “How To Serve Mass” (1651)

“Pausing a little, arise, make Adoration to the Sacrament, give the Pax to those present, observe Order of calling, and Years…”

Jeff Ostrowski · November 27, 2017

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Here are some books you might consider…

Jeff Ostrowski · November 27, 2017

PBS • “Gregorian Chant at the Seminary”

At the time I’m posting, this video has 355 views—let’s see if we can raise that number!

Jeff Ostrowski · November 25, 2017

Final Sunday after Pentecost (4th in November)

“And from the fig-tree learn a parable: when the branch thereof is now tender, and the leaves come forth, you know that summer is nigh.”

Jeff Ostrowski · November 25, 2017

PDF Download • “Evening Masses and Days of Obligation” (58 pages)

Permission has been given to post this marvelous 2016 dissertation by Fr. Shawn Tunink.

Jeff Ostrowski · November 24, 2017

“Simultaneous Fulfillment” of Mass Obligation?

Christmas falls on a Monday this year—but documentation shows “double dipping” is forbidden.

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Corpus Christi Watershed

President’s Corner

    PDF • “3-Voice Motet” (Father De Laet)
    I believe 99% of our readers will recognize this hymn tune. Perhaps Father Edgard De Laet should have called it a ‘hymn’ instead of a ‘motet for three voices’—but he’s technically correct, since MOTET is defined as: “a short piece of sacred choral music, typically polyphonic and unaccompanied.” The even verses are for three voices, as you will see if you download the PDF score at #20245. The odd verses may be song a cappella SATB or unison with organ.
    —Jeff Ostrowski
    PDF Download • “Hymn for 2 Voices”
    Readers who click on this video will see that it starts with verses of the “Pange Lingua” hymn by Saint Thomas Aquinas (d. 1274) arranged for two voices. However, there’s a polyphonic refrain (“Tantum Ergo”) for three voices, taken from Kevin Allen’s Motecta Trium Vocum. If your choir is very small, this piece is for you! You can download the PDF score free of charge—and you can also utilize the rehearsal videos for each individual voice—by navigating yourself to #20323.
    —Jeff Ostrowski
    “Holy Name Hymn” (2-Voice Arrangement)
    When we post a direct URL link, we frequently get thousands of downloads. But when scrolling is required, very few take the time. I mention this because those who click on this URL link and scroll to the bottom can download—completely free of charge—a clever 2-voice arrangement for a famous hymn to the Most Holy Name of Jesus. In a pinch, it can be nicely sung by one male and one female! It will be of interest to those who seek arrangements for two voices.
    —Jeff Ostrowski

Quick Thoughts

    “Reminder” — Month of January (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. Signing up couldn’t be easier: simply scroll to the bottom of any blog article and enter your email address.
    —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
    PDF Download • “In Paradisum” in English
    We always sing the IN PARADISUM in Latin, as printed on this PDF score. I have an appallingly bad memory (meaning I’d be a horrible witness in court). In any event, it’s been brought to my attention that 15 years ago I created this organ accompaniment for the famous and beautiful ‘IN PARADISUM’ Gregorian chant sung in English according to ‘MR3’ (Roman Missal, Third Edition). If anyone desires such a thing, feel free to download and print. Looking back, I wish I’d brought the TENOR and BASS voices into a unison (on B-Natural) for the word “welcome” on the second line.
    —Jeff Ostrowski

Random Quote

“The production of this book was too far advanced for notice to be taken of the new translation of the Hebrew psalter into Latin by the professor of the Biblical Institute at Rome. The Holy Father’s permission to use it in the divine office when properly adapted for the purpose will prove a welcome boon.”

— Father Cuthbert Lattey (15 Nov. 1944)

Recent Posts

  • PDF • “3-Voice Motet” (Father De Laet)
  • PDF Download • “Hymn for 2 Voices”
  • (January 2026) • “Children Singing Plainsong”
  • “Inquiry” • For Music Directors of Cathedrals and Larger Parish Churches
  • PDF Download • “Pange Lingua” for Three Voices (Father Edgard De Laet)

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