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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

Articles

Corpus Christi Watershed · March 19, 2013

1964 Rayburn Gregorian Chant Rhythm

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1891 Dom Joseph Pothier Antiphonale

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1840s (?) Gregorian Accompaniment (Félix Bélédin)

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1928 Bas Vesperale Organ Accompaniment

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1887 Reims/Cambrai Edition of the Graduale

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Corpus Christi Watershed · March 19, 2013

1928 Proprium Sanctorum (F.X. Mathias)

A free PDF download of this entire book is provided, courtesy of the St. Jean de Lalande Library of Rare Books.

Cynthia Ostrowski · March 18, 2013

Catholic News Agency Praises Vatican II Hymnal

“The paper is of the highest quality with a resilient binding, the designs, beautifully appointed. It has the readings for all Sundays and feast days – the complete cycles, A, B, C. It will be about twenty years or perhaps thirty before another translation is made. Here is music for the new evangelization. The Vatican II Hymnal serves as a musical ambassador for Christ.” —Sr. Joan L. Roccasalvo

Jeff Ostrowski · March 18, 2013

Msgr. Richard Schuler and the Piccoluomini

Sure enough, a few hours after the phone call, I happened to be searching the internet and I came upon the biography of Pope Pius II. What was his name before becoming pope? You guessed it !!!

Richard J. Clark · March 17, 2013

Mourning Pope Benedict XVI and Trusting the Holy Spirit

The Church’s vast treasury of sacred music belongs to the people! This is the truth that will bear out.

Fr. David Friel · March 17, 2013

Doing Something New

Jesus & Pope Francis

Jeff Ostrowski · March 16, 2013

Dr. Theodore Marier And Pope Francis

Our new Holy Father, Pope Francis, seems to be less interested in the Liturgy than his immediate predecessor. Some are asking, “What will become of the Liturgical movement called for by Pope Benedict and popes before him?”

Jeff Ostrowski · March 15, 2013

My Reflections On The Election Of Pope Francis

It seems to me, sometimes the choice of a Pope is obvious.

Richard J. Clark · March 15, 2013

Reflections from St. Peter’s Square

Fr. Jonathan Gaspar, Priest Secretary to His Eminence Seán Cardinal O’Malley, shares his heartfelt reflections from St. Peter’s Square on the historic day of March 13, 2013.

Fr. David Friel · March 14, 2013

A Papal Blessing

In Two Acts

Dr. Peter Kwasniewski · March 14, 2013

Communion in the Hand

The permission to receive Holy Communion in the hand is a dangerous aberration that must be rescinded if the Church is to achieve spiritual health again.

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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

“Leave the Mass alone. Our churches are full—the Protestants, in spite of their vernacular, far otherwise.”

— Cardinal Godfrey (one of the Vatican II fathers)

Recent Posts

  • Pope Paul VI • “Sacrificium Laudis” (15 Aug 1966)
  • “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

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