Hello everyone,
I need help engraving a unique rhythm structure relevant to “irrational”
meters (or perhaps non-dyadic meters or non-power-of-2-denominated meters).
In many cases of such meters, it is assumed that the unique meter prolates
the contained values as is sometimes done in a score which changes from a
duple meter to a triple meter.
However in a score I am currently engraving changes from duple to triple
meter do not change the basic speed of any note value (an 8th note is the
same duration in 3/4 and 6/8) and thus the “irrational” meters also do not
change the tempo. For instance a 1/6 meter would be the duration of one
quarter note in an incomplete tuplet of 3:2.
In the score I am engraving, measures are generally subdivided into even
pulses. In this case a 2/5 measure is divided into 9 16th notes. This could
be notated as a formidable 45:32 tuplet or, as I would prefer a 5:4 tuplet
with a 9:8 tuplet inside and nothing else. However, lilypond seems to be
erasing the inner tuplet. This is reproduced in the following mwe (I am
still using 2.23.81 which I know is quite old):
\times 4/5 {
\times 8/9 {
c'16
c'16
c'16
c'16
c'16
c'16
c'16
c'16
c'16
}
}
The spacing appears to be calculated correctly but the innermost tuplet
bracket and number will not appear unless another note or tuplet is added
as well. No change is caused by adding empty chords (<>) or by changing
\times to \tuplet in any permutation.
I looked around but I cannot tell if this behavior is known (it is a rare
scenario) and I cannot tell if this is a desired behavior. Perhaps it is.
thank you for any help,
gregory evans
--
gregory rowland evans, PhD
http://www.gregoryrowlandevans.com
https://soundcloud.com/gregory-rowland-evans
https://www.youtube.com/@GregoryRowlandEvans
https://github.com/GregoryREvans
