I've been working on this conductus attributed (in other sources) to Philip the Chancellor, and would especially appreciate feedback on my translation.

A GABC specific question is how to get the double oblique neume at "Tu post carnis" and "O quam mira". Gregorio, at least as I use it on Illuminare interface, lacks plicas, and I've resorted to replacing with quilismas. I guess a 5-line staff would be a bonus as well!