Re: Start music at specified measure without having to fill the previous.

[Jan-Peter Voigt]

Hi Urs,



Am 17.07.2016 um 22:45 schrieb Urs Liska:
> Hi Dimitris,
>
> ...
> First I must say I threw in the comment about the edition-engraver from
> my mobile, without any further checks. And it seems that right now my
> idea doesn't work.
That's right.

> The edition-engraver is a tool that can insert music expressions at
> specific positions in a score. That means these elements don't have to
> be coded within the music. One typical use case is to do this with
> overrides, to separate the engraving tweaks from the musical content. Or
> one can insert elements like rehearsal marks or line breaks externally.
>
> So I thought that - when the "mods" are entered as "LilyPond music
> expressions" this might also be used to insert actual music at that
> specific point in time (the edition-engraver addresses measures by
> number, regardless of how "much" time has gone by so far). A quick test
> showed that this doesn't work - yet. But I think this would be a
> terrific option for many use cases, so one might try if using "music" as
> a mod might be made to work. Jan-Peter, what do you think?
What I want is the possibility to insert cues with the edition-engraver. 
I wouldn't suggest entering whole scores that way. The problem is, that 
the edition-engraver needs to track time and follow a music stream 
beside the one triggering the main events. The edition-engraver is 
called only on moments, where there is an event triggered in the main 
stream.
For example (incomplete pseudo code):

{ c''1 }
\editionMod cues 1 2/8 Staff { e''8 d'' }

First the mod isn't triggered at all, because there is no event on that 
moment triggering the engraver-slots. Second, if there would be an 
event, how shall the second note get triggered?
That might all be possible, but IISC it leads to a reimplementation of 
the translation process. So Simons suggest of gridly or the like seams 
more usable. (There is a longstanding item on my agenda to document my 
lalily template approach and to produce an openlilylib module for it.)
Back to the topic, I would rather suggest extending the methods of 
assembling music expressions.

Best
Jan-Peter