Re: A Staff.TimeSignature problem (for me)

[Lukas-Fabian Moser]

Hi,

Am 09.10.19 um 13:04 schrieb Robert Blackstone:
> Dear all,
>
> Presently I'm transcribing an early seventeenth century cantata “per una voce 
> solo”. Two staves, one voice each (Vocal and Bass).
> Also two sections, Sinfonia prima and seconda.
> As for TimeSignatures, the first part of the Sinfonia prima starts with C and 
> when the singer enters it becomes, after a double barline, C barré.
> Again, after a double barline, Sinfonia seconda starts with C.
>
> In the course of this work the \time often changes: Already in  the first three 
> bars it is 8/4, then 4/4, again 8/4 etc., up to 12/4 and 16/4.
> It is simple to make these changed Time.Signatures invisible.
> But my problem is in the first bar of the three sections: How do I get C and C 
> barré at the beginng of these sections?
>
> Thanks in advance for any advice.

Could you please provide an example (Lilypond file and/or image of the 
original music) so we can see the problem more clearly.

But as an aside: For early music in which the actual lengths of the bars 
change very often (but where the changes should not be displayed by new 
time signatures), it might be more conventient to directly use 
Timing.measureLength:

\version "2.19.82"

{
  \time 4/4
  \set Timing.measureLength = #(ly:make-moment 12/8)
  \repeat unfold 12 c'4
}

(This has side-effects for beaming etc., but this should not become a 
problem if you only change between 4/4, 8/4 etc.)

Best
Lukas