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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 · June 10, 2015

Video • “Three Approaches To A Catholic Hymn”

Including a special version of the “Tantum Ergo” by Fr. Adrian Fortescue.

Jeff Ostrowski · June 9, 2015

Video • Disrespect For God’s House

Is Consecration by the words of Institution “de fide” ??

Jeff Ostrowski · June 9, 2015

PDF Download • “A Manual For Church Musicians” (1964) — 130 pages

A generous reader sent me copies of this extremely rare book.

Jeff Ostrowski · June 8, 2015

USCCB: “Revised Grail Psalter” Will Be Revised Again

“I cannot understand why a private family can be made worldwide agent for the official prayers of the Church.” —Dr. Jerry Galipeau

Jeff Ostrowski · June 7, 2015

Musical Resources • 2nd Sunday after Pentecost (Extraordinary Form)

Some EF communities will celebrate the “External Solemnity” of Corpus Christi today.

Jeff Ostrowski · June 7, 2015

Message From A “Traditional” Priest

“Believe me we had some long offices back in those days.”

Jeff Ostrowski · June 6, 2015

On This Day . . . In 1944

Soldiers attending Mass during World War II.

Jeff Ostrowski · June 5, 2015

Eerie Silence After Cardinal Sarah’s Testimony

Cardinal Sarah has committed an “unforgivable sin” in the opinion of progressive liturgists.

Jeff Ostrowski · June 4, 2015

Order of Worship • “Mass VIII” — High Resolution Images

It seems many wish to include Mass VIII in their program booklets.

Jeff Ostrowski · June 3, 2015

Finding A Liturgical Context

A very important article recently appeared in the Adoremus Bulletin.

Jeff Ostrowski · June 2, 2015

“Lauda Sion” • Rehearsal Video With Translation By Saint Robert Southwell, Jesuit Martyr

Many of the big publishing companies skip the Corpus Christi Sequence—they literally leave it blank.

Jeff Ostrowski · June 1, 2015

GIA Publications: “Painful Blessing Of A New Sensitivity”

I really don’t “get” the lyrics in Catholic hymnals by the major publishers.

Jeff Ostrowski · May 30, 2015

Musical Resources • Trinity Sunday (1962 Missal)

The last time we sing “Vidi Aquam” is Pentecost Sunday; now we go back to “Asperges Me.”

Jeff Ostrowski · May 28, 2015

Coolest Liturgical Image Of All Time?

Fantastic photograph taken by our organist during Mass on Sunday…

Jeff Ostrowski · May 28, 2015

Polyphony (3 voices) by Morales with Hymn (2 voices) for the Holy Trinity

Including rehearsal videos and special 13th-century hymn to the Most Holy Trinity.

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Corpus Christi Watershed

President’s Corner

    Music List • (2nd Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for this coming Sunday—1 March 2026—the 2nd Sunday of Lent (Year A). If such a thing interests you, feel free to download it as a PDF file. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the flourishing feasts website alongside the official texts in Latin.
    —Jeff Ostrowski
    Particularly Beautiful
    The 2nd Sunday of Lent has magnificent propers. Its INTROIT is particularly striking—using a haunting tonality—but the COMMUNION with fauxbourdon verses is also quite remarkable. I encourage all the readers to visit the feasts website, where the Propria Missae may be downloaded completely free of charge.
    —Jeff Ostrowski
    Which Mass?
    In 1905, when the Vatican Commission on Gregorian Chant began publishing the EDITIO VATICANA—still the Church’s official edition— they assigned different Masses to different types of feasts. However, they were careful to add a note (which began with the words “Qualislibet cantus hujus Ordinarii…”) making clear “chants from one Mass may be used together with those from others.” Sadly, I sometimes worked for TLM priests who weren’t fluent in Latin. As a result, they stubbornly insisted Mass settings were ‘assigned’ to different feasts and seasons (which is false). To understand the great variety, one should examine the 1904 KYRIALE of Dr. Peter Wagner. One should also look through Dom Mocquereau’s Liber Usualis (1904), in which the Masses are all mixed up. For instance, Gloria II in his book ended up being moved to the ‘ad libitum’ appendix in the EDITIO VATICANA.
    —Jeff Ostrowski

Quick Thoughts

    Extreme Unction
    Those who search Google for “CCCC MS 079” will discover high resolution images of a medieval Pontificale (“Cambridge, Corpus Christi College, MS 079”). One of the pages contains this absolutely gorgeous depiction of the Sacrament of Extreme Unction.
    —Corpus Christi Watershed
    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

“Like all other liturgical functions, like offices and ranks in the Church, indeed like everything else in the world, the religious service that we call the Mass existed long before it had a special technical name.”

— ‘Rev. Adrian Fortescue (THE MASS, page 397)’

Recent Posts

  • Music List • (2nd Sunday of Lent)
  • Particularly Beautiful
  • PDF Download • “Funerals in the Ordinary Form”
  • Extreme Unction
  • Which Mass?

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