Views from the Choir Loft

Andre Mocquereau Theory of Rhythm

Jeff Ostrowski · April 15, 2026

“Gregorian Chant Isn’t a Platform for Your Personal Theories, Jeff” • (A Letter We Received)

“My desire, Leroy, is to answer your question in a rigorously straightforward way.” —Jeff Ostrowski

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Jeff Ostrowski · May 5, 2025

“Basic Catechism of Gregorian Chant” • Fifteen Questions Answered

“Kids, you’re only on this floating rock for a very short time.”

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Jeff Ostrowski · March 29, 2025

PDF Download • “Gloria III” Organ Accompaniment

This is surely one of music history’s great ironies!

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Jeff Ostrowski · December 3, 2024

PDF Download • Pristine Scan: Father Mathias’ 1905 Kyriale Organ Accompaniment (186 pages)

Father Mathias served as organist for Strasburg Cathedral, where he founded the “Saint Leo Institute for Church Music” in 1913.

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Dr. Charles Weaver · February 5, 2024

What is the Place of the Horizontal Episema in Dom Mocquereau’s Theory?

It really is a minor part of Mocquereau’s theoretical enterprise. That doesn’t mean it’s completely pointless, though.

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Jeff Ostrowski · October 23, 2023

“Did One Man Single-Handedly Sabotage the Gregorian Restoration?” • (Part 2 of 2)

Will anyone step forward to defend this?

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Dr. Charles Weaver · October 5, 2023

PDF Dissertation • “Dom Mocquereau and Music Theory” (282 Pages)

My thesis on how Dom Mocquereau relates to other theories of musical rhythm is now available for download.

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Music List • “Ascension of the Lord”

Readers have expressed interest in examining my “music list” for this coming Sunday.

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—Jeff Ostrowski

PDF Download • “For Pentecost Sunday”

There’s a triple ‘allelúja’ and I just love the chord at the end of the 2nd iteration.

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—Jeff Ostrowski

PDF Download • “Organ Accompaniment”

The following declaration will probably smack of “blowing my own horn.”

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—Jeff Ostrowski

“Thee” + “Thou” + “Thine”

Regarding approval for the “Revised Standard Version (Catholic Edition).”

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—Jeff Ostrowski

“Reminder” — Month of May (2026)

Since a new month has arrived, it’s my pleasure to remind you that…

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—Jeff Ostrowski

Simplified Version • “Canon in D” (Pachelbel)

I don’t care what people say; I love this piece!

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—Jeff Ostrowski

These prayers were not peculiar to Good Friday in the early ages (they were said on Spy Wednesday as late as the eighth century); their retention here, it is thought, was inspired by the idea that the Church should pray for all classes of men on the day that Christ died for all. Duchesne is of opinion that the “Oremus” now said in every Mass before the Offertory—which is not a prayer—remains to show where this old series of prayers was once said in all Masses.

— Catholic Encyclopedia (1909)