Reference: “Mandatum novum do vobis”, Graduale Simplex, Holy Thursday: Evening Mass of the Lord's Supper, Washing of Feet, pp. 132–133
Source Text:
Antiphon: Jn 13:34 (ICEL)
Psalm Verses: Ps 118(119):1, 15, 32, 40, 45, 47, 97, 103, 105, 129 (Revised Grail Psalter, approved for public worship)
Mode: III
Voicing: SATB a cappella/unison choir/cantor + keyboard; soprano line may be sung a cappella
The Latin parent antiphon in the Graduale Simplex corresponds with that found in the Graduale Romanum, Graduale Triplex, and Gregorian Missal for Sundays (without psalm-verse citations).
Other English-language SATB settings of Graduale Simplex propers available here.
Ari - thank you time after time. I hope I've downloaded all of these English SATB Antiphons that you've been posting. Your efforts are extremely valuable and most appreciated.