Views from the Choir Loft

William Mahrt Gregorian Chant

Andrea Leal · May 28, 2025

“The Adalbert Propers” • Six (6) Quotations

“Fewer than 1% of Catholics are able to answer these questions correctly.” —Andrea Leal

Jeff Ostrowski · January 22, 2025

“Remembering William Mahrt” • My interview with Dr. Horst Buchholz (21 January 2025)

Includes Dr. Buchholz’s obituary for William Mahrt: “A Gentleman, a Scholar, and a Friend”

Fr. David Friel · January 2, 2025

In Memoriam • Dr. William Mahrt

A brilliant and faithful man who had tasted heaven in the chants of the Church

Jeff Ostrowski · November 8, 2021

Missa “My Little Pony” by Dan Schutte • Its Pedigree

A USCCB statement: singing psalms at Mass “may create problems” … ?

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Fr. David Friel · May 9, 2021

Virtual Sacred Music Colloquium 2021

Alongside many familiar faces, several new presenters are joining the faculty this year.

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Fr. David Friel · October 12, 2020

Sacred Music Boot Camp 2020

Three days of practical chant instruction and immersion in the treasury of Catholic sacred music

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Fr. David Friel · June 11, 2020

Virtual Sacred Music Colloquium 2020

The CMAA will offer a virtual version of its annual, week-long workshop.

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Fr. David Friel · September 8, 2019

PDF Download • Chant Notation—Nuptial Blessing (EF)

With permission from the CDF, the nuptial blessing at a sung EF Mass may be chanted according to this melody.

Fr. David Friel · August 30, 2015

Society for Catholic Liturgy Conference 2015

Featuring Archbishop Salvatore Cordileone, Dr. William Mahrt, and Fr. Uwe Michael Lang

Jeff Ostrowski · February 4, 2015

Exclusive Interview With Dr. William Mahrt

Towards the end I ask the CMAA president a loaded question … and he answers!

“Reminder” — Month of April (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

Simplified Accompaniment (Easter Hymn)

Number 36 in the Brébeuf Hymnal is “At the Lamb’s high feast we sing,” an English translation for Ad Cenam Agni Próvidi (which was called “Ad Régias Agni Dapes” starting 1631). As of this morning, you can download a simplified keyboard accompaniment for it. Simply click here and scroll to the bottom. Many organists are forced to serve simultaneously as both CANTOR and ACCOMPANIST. In spite of what some claim, this can be difficult—which explains why choirmasters appreciate these simplified keyboard accompaniments. Sadly, many readers will click that link but forget to scroll to the bottom where the simplified PDF file is located.

—Jeff Ostrowski

PDF Download • “Quasi Modo Sunday”

The Introit for “Quasi Modo Sunday” (12 April 2026) is particularly beautiful. The musical score can be downloaded as a PDF file, and so can the organ accompaniment. The official language of the Catholic Church is Latin (whereas Greek is our mother tongue). Vatican II said Gregorian Chant must be given “first place” under normal circumstances. As a result, some parishes will rightly sing the authentic version. On the other hand, because so many USA dioceses disobey the mandate of Vatican II, some musicians sing plainsong in the vernacular. I have attempted to simultaneously accompany myself on the pipe organ while singing the English version. Although very few take advantage of it, the complete Proprium Missae is posted at the flourishing feasts website.

—Jeff Ostrowski

PDF Download • “Anima Christi”

I received a request for an organ accompaniment I created way back in 2007 for the “Anima Christi” Gregorian Chant. You can download this PDF file which has the score in plainsong followed by a keyboard accompaniment. Many melodies have been paired with “Anima Christi” over the centuries, but this is—perhaps—the most common one.

—Jeff Ostrowski

PDF • “Liturgical Law” (467 Pages)

On Good Friday during the middle ages, the pope privately recited THE ENTIRE PSALTER. If you don’t believe me, see for yourself by reading this passage by Dom Charles Augustine Bachofen (d. 1943). His famous book—called “Liturgical Law: A Handbook Of The Roman Liturgy”—was published by the Benjamin Herder Book Company, which was the American arm (operating out of St. Louis, Missouri) of one of the world’s most significant Catholic publishers. Dom Charles Augustine Bachofen was born in Switzerland but spent his career between the Benedictine monasteries at Conception (Missouri) and Mount Angel (Oregon). His 1931 masterpiece, Liturgical Law can be downloaded as a PDF file … 467 pages!

—Jeff Ostrowski

“Gregorian Chant Quiz” • 24 March 2026

How well do you know your Gregorian hymns? Do you recognize the tune inserted into the bass line on this score? For many years, we sang the entire Mass in Gregorian chant—and I mean everything. As a result, it would be difficult to find a Gregorian hymn I don’t recognize instantly. Only decades later did I realize (with sadness) that this skill cannot be ‘monetized’… This particular melody is used for a very famous Gregorian hymn, printed in the LIBER USUALIS. Do you recognize it? Send me an email with the correct words, and I promise to tell everybody I meet about your prowess!

—Jeff Ostrowski