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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

Square Note App

Fr. David Friel · April 9, 2017

ELL PHONES and other mobile devices these days serve manifold purposes. For some, they double and triple as cameras and internet browsers. For others, they also function as gaming devices, tip calculators, searchable Rolodexes, stereo systems, navigation systems, and portable televisions. But, have you ever used your mobile device as a Graduale Romanum?

Now you can, if you would like.

Recently, I stumbled upon an app called Square Note, which markets itself to church musicians and those who wish to learn more about chant. The app allows users to see a wide array of chants, with their texts and square notation. The chants are grouped in four major sections.

First, the Mass propers for the Ordinary Form encompass the whole temporal cycle and part of the sanctoral. Secondly, Mass propers are also available for the temporal cycle of the Extraordinary Form. Also included is a Kyriale section complete with all eighteen chant Masses and six chant creeds. Finally, the app offers a collection of “Other Chants,” which includes multiple versions of the Marian antiphons, certain Eucharistic chants, and several tones for the Te Deum.

One of the most useful features of the app is its capability of searching the texts of all the chants. Searches can be limited to the titles, or incipits, of the chants, or searches may be opened to include the full text of all the chants. For students of the liturgy, this tool is especially valuable.

Another feature that can be useful is the playback mode offered for each piece. Although this would unsettle purists, I can imagine the playback being useful for beginners. The tone quality of the playback is, of course, choppy and mechanistic, so its overuse ought to be avoided. I’ve known many schola directors who will not use a piano to find pitches or sound out passages, and there is real wisdom in their approach. For some, though, the playback mode offered in Square Note could be the help they need to get off the ground. Square Note even allows the user to adjust the pitch and tempo of the playback tool.

This app is the handiwork of Fr. Matthew Spencer, O.S.J. and Bro. Stephen Spencer, O.S.J., both members of the Holy Spouses Province of the Oblates of St. Joseph in the United States of America. It is a developing product, too, as more chants continue to be added to the collections.

The app is available for $2.99 in the Apple App Store or on Google Play. Click here to explore more fully the riches of this “Rituale in your pocket.”

Opinions by blog authors do not necessarily represent the views of Corpus Christi Watershed.

Filed Under: Articles Tagged With: Graduale Romanum Roman Gradual Propers, Gregorian Chant, Propers, Resources for training in Church music Last Updated: January 1, 2020

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About Fr. David Friel

Ordained in 2011, Father Friel is a priest of the Archdiocese of Philadelphia and serves as Director of Liturgy at Saint Charles Borromeo Seminary. —(Read full biography).

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Corpus Christi Watershed

President’s Corner

    PDF Download • “Ubi Caritas” (SATB)
    I remember singing “Ubi Cáritas” by Maurice Duruflé at the conservatory. I was deeply moved by it. However, some feel Duruflé’s version isn’t suitable for small choirs since it’s written for 6 voices and the bass tessitura is quite low. That’s why I was absolutely thrilled to discover this “Ubi cáritas” (SATB) for smaller choirs by Énemond Moreau, who studied with OSCAR DEPUYDT (d. 1925), an orphan who became a towering figure of Catholic music. Depuydt’s students include: Flor Peeters (d. 1986); Monsignor Jules Van Nuffel (d. 1953); Arthur Meulemans (d. 1966); Monsignor Jules Vyverman (d. 1989); and Gustaaf Nees (d. 1965). Rehearsal videos for each individual voice await you at #19705. When I came across the astonishing English translation for “Ubi Cáritas” by Monsignor Ronald Knox—matching the Latin’s meter—I decided to add those lyrics as an option (for churches which have banned Latin). My wife and I made this recording to give you some idea how it sounds.
    —Jeff Ostrowski
    PDF • “Cantus Mariales” (192 pages)
    Andrea Leal has posted an absolutely pristine scan of CANTUS MARIALES (192 pages) which can be downloaded as a PDF file. To access this treasure, navigate to the frabjous article Andrea posted Monday. The file is being offered completely free of charge. The beginning pages of the book have something not to be missed: viz. a letter from Pope Saint Pius X to Dom Pothier, in which the pope calls Abbat Pothier “a man versed above all others in the science of liturgy, and to whom the cause of Gregorian chant is greatly indebted.”
    —Jeff Ostrowski
    Music List • (2nd Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for this coming Sunday, which is the 2nd Sunday of Lent (1 March 2026). If such a thing interests you, feel free to download it as a PDF file. This feast has magnificent propers. Its somber INTROIT is particularly striking—using a haunting tonality—but the COMMUNION with its 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

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

“The Humanists abominated the rhythmical poetry of the Middle Ages from an exaggerated enthusiasm for ancient classical forms and meters. Hymnody then received its death blow as, on the revision of the Breviary under Pope Urban VIII, the medieval rhythmical hymns were forced into more classical forms by means of so-called corrections.”

— Father Clemens Blume, S.J.

Recent Posts

  • PDF Download • “Ubi Caritas” (SATB)
  • PDF • “Cantus Mariales” (192 pages)
  • PDF Download • Fourteen (14) Versions of the Splendid Hymn: “Salve Mater Misericordiae”
  • Fulton J. Sheen • “24-Hour Catechism”
  • Music List • (2nd Sunday of Lent)

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