Hi Reinhold,
> for 20th-century music it's no uncommon to have alternating time signatures.
Yes.
> The main problem for lilypond is not the display, since the stencil can be
> easily overridden, but rather the automatic barline feature, which needs to
> know how long a particular measure needs to be. With those alternating time
> signatures, all you know is that the measure should have a length that is in
> the list of given fractions, but you don't know which.
Yes, but once you've displayed the initial TS, you can just turn off the
stencil:
\version "2.13.29"
#(define ((custom-time-signature one two three four five six) grob)
(grob-interpret-markup grob
(markup #:override '(baseline-skip . 0) #:number
(#:line ((#:column (one two))
(#:column (three four))
(#:column (five six)))))))
alternatingTS = \relative c' {
\override Score.TimeSignature #'stencil =
#(custom-time-signature "3" "4" "5" "8" "2" "4")
\time 3/4 c8 c c c c c |
\override Score.TimeSignature #'stencil = ##f
\time 5/8 c8 c c c c |
\time 2/4 c8 c c c |
\time 5/8 c8 c c c c |
\time 3/4 c8 c c c c c |
}
\score { \alternatingTS }
Cheers,
Kieren.
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