Re: Ancient repeat sign

[Jürgen Reuter]

   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/