You wrote:-
+++
In the various 'ancient notation' styles, Lilypond automatically places
a custos at the end of each line, and mostly gets it right. But when
there is a refrain or antiphon, a custos may be needed in an unexpected
place or at a different pitch. Is there any way to insert a custos
manually, or override the placement of one?
An example:
The custos at the end of the third line should be F, not A, since the
next note to be sung is the initial note of the antiphon, not that of
the following verse. Furthermore, it should be placed over the
beginning of the 'Asperges' incipit, not at the end of the line. There
should also be an identical custos at the incipit on the last line.
Some ugly hackery with invisible notes can fix the pitch, but I have not
figured out any way to fix the horizontal alignment, or to obtain a
custos on the last line.
Best wishes,
Matthew
+++++++++++
Greetings Matthew,
I cannot help with the detail of how to achieve the custos movement you
ask about...
However, my understanding of the Asperges is that the Antiphon is
repeated only after the end of the Gloria Patri... See p11 in Liber
Usualis ed. Benedictines of Solesmes, Desclee & Co. 1959
(not within the chant as shown in your pdf file)
Regards
Bill
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