Re: Help with Tweaking of Volta Brackets - without repeat marks

[Phil Holmes]

----- Original Message ----- 
From: "James Lowe" <address@hidden>
To: "Phil Holmes" <address@hidden>
Cc: "lilypond-user Mailinglist" <address@hidden>
Sent: Friday, May 14, 2010 12:39 PM
Subject: Re: Help with Tweaking of Volta Brackets - without repeat marks


> Phil,
>
> Phil Holmes wrote:
> > James,
> >
> > I'm by no means an expert on LilyPond or music, but can offer the 
> > following
> > observations:
> >
> > You can get rid of the error message by ending the first volta with a 
> > finish
> > marking.  If you replace your second \set Score command with:
> >
> >   \set Score.repeatCommands = #'((volta #f) (volta "Fine."))
>
> > It will compile cleanly.  However, you won't get the ending lines you're
> > looking for.  I think that this is because you're not actually signalling 
> > a
> > repeat from a musical perspective.  My understanding from playing with 
> > this
> > in LilyPond is that the double bar is not a repeat mark, and therefore
> > LilyPond has not found anywhere to actually terminate that section of 
> > music.
> > Replace your \bar "||" with \bar ":|" and you get the "terminated" 
> > bracket
> > you're looking for.  Ditto the second repeat isn't actually (in musical
> > terms) terminated - the music carries on past the 4th bar into the 5th. 
> > If
> > you want a "terminated" bracket on the second time, you need to align the
> > end of the bracket with where the music ends, and tell LilyPond 
> > explicitly
> > where this is.  I do this with an end bar.
> >
> > My version below isn't what you want, because it uses repeat bars where 
> > you
> > have double bars, but it is musically correct and ends the brackets as 
> > you
> > want.
> >
> > \relative c' {
> >   \time 4/4
> >   d'4. c8 b a g f
> >   \set Score.repeatCommands = #'((volta "1."))
> >   e4 e' e r
> >   \set Score.repeatCommands = #'((volta #f) (volta "Fine.") end-repeat)
> >   e,4 e e r \bar "||"
> >   c'4 c8 c c4 c8 c
> >   \set Score.repeatCommands = #'((volta #f))
> > \bar "|."
> > }
> >
> > --
> > Phil Holmes
>
> Thanks for your time. That does help explains things; I don't really fully 
> understand syntax of these 'tweaks', maybe there is an alternative to 
> 'end-repeat' that just 'ends' the bracket regardless.
>
> In this case the end bar is incorrect in this piece at the 'fine' which is 
> why it has double bars, and as I said before the repeats are not relevant 
> either.
>
> Perhaps I could remove the repeat bar engraver or make it invisible so 
> that it prints the voltas right but 'hides' the repeats?
>
> Again that is something I need to sit and figure out as I rarely have to 
> make such tweaks so have to re-learn it each time on the rare occasions I 
> do it.
>
> Thanks again.
>
> James

As I said, James, I'm a bit dubious about the layout of the music.  The 
voltas are alternative endings, and from my musical theory I would say don't 
indicate a repeat.  The double dotted bar indicates a repeat, and so is 
required when a piece of music is repeated.  That's what I would have 
thought, anyway.

--
Phil Holmes