Re: ottava bassa

[Phil Holmes]

----- Original Message ----- 
From: <address@hidden>
To: "lilypond-user" <address@hidden>
Sent: Monday, January 10, 2011 12:48 PM
Subject: ottava bassa


> hello list,
>
> in the piano part of an ensemble piece i need (want, that is) to put
> an ottava bassa indication that applies only to the lower chord in the
> left hand. the problem is that at the same time a loco chord is tied
> above it (see the attached image). i tried different combinations,
> like the code below:
>
> <<
> { s2 r4 r16 \ottava #-1 <b,, bes'>8.~ <b bes'>4. \ottava #0 }
> \\
> { <fis'' cis' g'>2~ <fis cis' g'>2~ < fis cis' g'>4 }
> > >
>
> but i don't know how to achieve this. i don't know if i'm doing
> something wrong or missing something in the documentation or if this
> isn't possible. any pointers would be greatly appreciated.
>
>
> best,
>
> lj

There's a lot of very strange almost random notes and spaces in the LilyPond 
code you pasted.  However, if we clean it up we get something like this:

{
 \clef "bass"
 <<
   {
     <fis' cis' g'>1~ < fis' cis' g'>4
   }
   \\
   {
     r2 r4
     \ottava #-1
     <b,, bes,,,>4~ <b,, bes,,,>4.
     \ottava #0
   }
 >>
}

It produces the output in the png attached.  What's clearly happening is 
that the ottava marking affects both voices, despite it being only present 
in one voice.  I've also tried with explicit voices.  If we drop the octave 
of the second chord in the upper voice to place the notes correctly, we 
can't tie the notes.  Is it possible to ottavate only one voice?


--
Phil Holmes

ottava2Wrong.png
Description: PNG image