[1] Duruflé dedicated the work to Auguste Le Guennant, the director of the Gregorian Institute of Paris.

Tota pulchra es ("Thou art all fair") is a text from Vespers for the Marian Feast of the Immaculate Conception.

[4] A reviewer notes: "Here Duruflé shows his particular genius for invoking the spiritual element of plainsong in a polyphonic context, achieving a suppleness of rhythm alongside strong characterization of each text.

"[3] In recordings, the motets are often combined with Duruflé's Requiem, sharing the same approach of polyphonic music based on Gregorian chant.

The Cambridge Singers, conducted by John Rutter, performed Ubi caritas in a collection This is the Day of music on royal occasions, while the Westminster Abbey Choir, conducted by James O'Donnell, performed Tu es Petrus for an album The Feast of Saint Peter the Apostle at Westminster Abbey.