Re: Cadenza problem

[David Kastrup]

David Sumbler <address@hidden> writes:

> The piece I am setting has a flute cadenza which is notated in standard
> size notes totalling 14 crotchets (quarter-notes) in length.  The whole
> cadenza is written between 2 successive barlines.
>
> The prevailing time signature at this point is 6/8, and in the cadenza
> all of the other instruments have a tied dotted minim with a fermata.
>
> I have been trying to reproduce this layout in LilyPond, using
> v.2.19.81.  I tried \cadenzaOn etc., but that did not seem suitable.  I
> then tried to adapt the snippet found at 
> http://lsr.di.unimi.it/LSR/Item?id=836 .  Using this, the cadenza bar
> itself works OK, but in subsequent bars Lilypond seems to think that
> the time signature is 4/4.
>
> I conclude that the line '\unset Timing.measureLength' restores
> measureLength to its default value, rather than restoring the previous
> value.  I tried removing that line and adding '\once ' before
> '\set Timing.measureLength', but this fails completely.
>
> I have now replaced the line 
> \unset Timing.measureLength
> with
> \set Timing.measureLength = #(ly:make-moment 3/4)
>
> This works fine, but how would I get a more general solution which
> could be used in cases which are not in 6/8 or 3/4?

This might be outdated.  \cadenzaOn/\cadenzaOff now work by halting
measurePosition which is less invasive but has other problems.  It still
has a problem with counting bars when bars are generated manually: this
might still warrant fixing at some point of time.

-- 
David Kastrup