Introducing the Graduale O.P. project

The Graduale O.P. project is aimed at producing a new edition of the Graduale drawing on Dominican chant sources and arranging them for use in the contemporary Ordinary Form of the Roman Rite. I will periodically post PDFs of drafts of chants.

I principally draw on four sources:

  • Rome, Santa Sabina XIV L1, Graduale (fols. 323–369)
  • London, British Library add. ms. 23935 (fols. 378–443)
  • Graduale juxta ritum sacri Ordinis Prædicatorum auctoritate apostolica approbatum reverendissimi in Christo patris fratris Emmanuelis Suarez ejusdem ordinis generalis magistri permissu editum (Romæ: Ad S. Sabinæ, 1950).
  • Graduale sacrosanctæ Romanæ Ecclesiæ de Tempore et de Sanctis SS. D. N. Pii X. Pontificis Maximi jussu restitutum et editum (Romæ: Typis Vaticanis, 1908)

My starting point for each chant is the GABC transcription of the 1950 Suarez Gradual done by Andrew Hinkley, available at GregoBase. I then compare each chant with the two 13th century Dominican manuscripts and make adjustments accordingly. I have freely adjusted the bar lines, recognizing that the editorial choices of the Suarez Gradual are not entirely consistent and that the meaning of the barlines in the manuscript sources remains elusive. I welcome feedback and criticisms of my editorial choices.

It should be noted that although the Suarez Gradual is fundamentally based on Santa Sabina XIV L1, it is occasionally quite different in melody and text than the manuscript.

For chants that are not found in the Dominican tradition but that are assigned in the contemporary Graduale Romanum, I take them from the 1908 Graduale Romanum, also using the GABC transcriptions of Andrew Hinkley available at GregoBase. This is a convenient source because it lacks the rhythmic signs of Solesmes and is thus closer to the rhythmic conventions used in the Suarez Gradual. I make some adjustments to the rhythmic signs of the Graduale Romanum, particularly changing the Roman quarter bars to Dominican quarter bars.

In all cases, I try to standardize the typography of the chants by using “i” instead of “j” and using “æ” instead of “ae”, in addition to using lower-case letters for the opening words of chants.

The GABC and TeX sources for my project are available on GitHub.

All of these editions are works in progress, and I welcome any feedback or comments.

Image: Rome, Santa Sabina XIV L1, fol. 323v.


4 thoughts on “Introducing the Graduale O.P. project

  1. As far as pairing the Graduale with the current Lectionary is concerned–I did that for the conventual Sunday and Solemnity Masses at the Angelicum for several years. If you need help for the Sundays and Solemnities in years A, B, and C, that fall during the academic year, let me know. Basically, I did all the Sundays of Advent, Christmas, Lent, and Easter; the Sundays of Pentecost, Trinity, and Corpus Domini, and Ordinary Time Sundays 1 (Baptism of the Lord)-9 and 27-Christ the King, plus All Saints, All Souls, Epiphany, Presentation, Annunciation… –Fr. Robert Christian, OP


    1. Dear Fr Christian,

      I’m presently following the Graduale Romanum 1974 for the Temporale, which follows the Ordo Cantus Missae. Did your set follow that, or was it linked in another way? If you have files, feel free to email them to me at innocent.smith AT


      fr. Innocent


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