Domine in auxilium meum aspice confundantur
The rubric for this offertory is at the end of 043r; all of the rest of the chant is in 043v.
Textual variant: «aspice».
The modern liturgical book references are given for the text variant «(...) respice (...) Domine &c.».
The entire piece revolves around Ffaut, in what would be a ditonus above the ancient finalis (Ffaut) and a diathesaron below (sextus modus). The diapente of 6th mode was not therefore defined in the offertory antiphon but only in the ancient offertorial verses. When the verses disapeared of the liturgy the mode became diapente-less! This problem is solved in the last neume of the piece («eam»), that places the new finalis in Dsolre (i.e. a diapente below the highest notes in Alamire) and adds a typical climacus to Are in order to define the modal diathesaron and diapason, thus perfecting the plagal mode of Dsolre (secundus).