Hi, I have to confess that I have not seen this notational sign before, therefore I am not really sure. But I do not think that it represents a repeat sign in the modern sense. It looks more like an annotation / meta information to the divisio. Specifically, my guess is that this sign refers only to the lyrics, but not to the notes, i.e. how often the text in the previous section should be distributed among the (un-repeated) performance of the notes.
I found a recording of this Kyrie on youtube: https://www.youtube.com/watch?v=ImaLuZWs144 Assuming that they are performing it not completely wrong, if you listen to the highest voice (it switches between two choirs, thus also working out the repetition of the text), you can follow the notes in the first three lines of the score and clearly hear the three subdivision parts within the first "Kyrie eleison" part, with the text repeated three times, but the notes performed only once. Similarly, the notes of the following "Christe eleison" part are also divided into three subsections, each with "Christe eleison" lyrics, and finally, the "Kyrie eleison" part, this time with somewhat different subdivisions, just like the signs differ. -Jürgen On Sun, Feb 6, 2022 at 9:32 PM Dan Eble <dan@lyric.works> wrote: [1]https://www.pinterest.ca/pin/560909328587237881/ The sections of this work seem to be separated with a kind of repeat sign. A :|||: B :|||: C :||: D :|: Q. Do I understand correctly that this is performed AAA BBB CCD? Q. Is this the most obvious way to code it? { \repeat volta 3 \A \repeat volta 3 \B \repeat volta 2 \C \repeat volta 1 \D } Q. Is "signum repetitionis" an appropriate name for one instance of these signs? Q. If LilyPond supported engraving these signs, which ancient staff contexts should enable it by default? PetrucciStaff should, judging from what I see in Harmonice Musices Odhecaton. I'm not sure about the others. Q. Is there anything else that I should have asked? Thanks, -- Dan References 1. https://www.pinterest.ca/pin/560909328587237881/
