Reinhold Links to LilyPond Answers

Printing out a SMOB from within C++

Use

  ly_display_scm ([SCM-object]);

Positioning dynamics (\ff) before notes instead of above

Use

          \override DynamicLineSpanner #'padding = #-1.8
          \override DynamicText #'extra-offset = #'( -2.1 . 0)

before the dynamics. (Taken from http://lilypond.org/doc/v2.10/Documentation/user/lilypond/Fitting-music-onto-fewer-pages)

How shall I write tempo marks (Andante, Allegro, etc) so that they don't disturb the spacing of the notes?

You can use the following definition:

   tempoMark = #(define-music-function (parser location padding marktext)
                                       (number? string?)
   #{
     \once \override Score . RehearsalMark #'padding = $padding
     \once \override Score . RehearsalMark #'no-spacing-rods = ##t
     \mark \markup {  $marktext }
   #})

and then

\tempoMark #3.0 #"Andante"

in the notes. The first argument is the padding, the second the text. Of course you can modify the contents of \markup to make the text appear in bold/italic or whatever you like. (Taken from http://lilypond.org/doc/v2.10/Documentation/user/lilypond/Advanced-tweaks-with-Scheme#Advanced-tweaks-with-Scheme)

If I combine the rests in choir music, a doted 8th rest will have two dots

If you combine rests of two choir voices on the same staff, you can do this with:

GlobalSettings = {
  ...
  \revert Rest #'direction
  \revert MultiMeasureRest #'staff-position
}

However, then dotted rests will appear with two dots. The reason is apparently that \voiceOne and \voiceTwo settings also set different prefered directions for the dots. One possible solution is to try to add also

\revert Dots #'direction

and/or

\revert DotColumn #'direction

( Tip given by Mats Bengtsson on the Lilypond User Mailinglist, didn't work for me, though)

Increasing the horizontal spacing of vocal scores

Lilypond is too aggressive puttint too much stuff in one line. As a workaround, try:

\override Score.SeparationItem #'padding = #0.5

(from the Lilypond Mailinglist and the documentation)

Removing empty staves in a system

If a whole staff contains only rests, you can tell lilypond to hide such staves by using the RemoveEmptyStaffContext:

\layout {
  \context {
    \RemoveEmptyStaffContext 
  }
}

However, the first system will always have all staves, even if they are empty! This can be changed by

\layout {
  \context { \Score
    \override VerticalAxisGroup #'remove-first = ##t
  }
}

(idea taken from http://www.mail-archive.com/lilypond-user%40gnu.org/msg23664.html)

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