Re: sus7 chords in \chordmode

[Flaming Hakama by Elaine]

\version "2.18.0"

\include "english.ly"

%{

I will try to be careful here since last time I offered help with chords I got mercilessly flamed.

There are two stages of lilypond chords:  input and formatting.

    o If either one is incorrect, you won't get what you want.  

    o If one of them is correct, you need to fix the other one.

    o Fiddling with the one that is correct will not get you any closer, and may get you farther away.

As you are probably aware, the input syntax is defined at 

http://lilypond.org/doc/v2.19/Documentation/notation/common-chord-modifiers

One sure-fire way to debug chord issues is to use the chordmode to print the notes that lilypond interpreted from your input syntax.

%} 

whereOhWhereIsMySusChord = \chordmode {

  g1:4.7 g:7.4 g:sus g:4 g:sus4.7  

}

<<

  \new ChordNames { \whereOhWhereIsMySusChord }

  {

    \whereOhWhereIsMySusChord

  }

>>

%{

Once you have found an input syntax which gives you the notes you want in your chord, 

(in this case, it is g1:sus4.7) then you can fiddle with the formatting library.

In case you want a library that agrees with your notion of a sus7 chord, you are welcome to use mine: 

http://flaminghakama.com/flaming-lilypond-chords

Or, you can add the sus7 chord definition as Brett suggested:

%}

myChordExceptions = {

     <c f g bf>-\markup { \super "sus7" }    

}

chExceptions = #(append (sequential-music-to-chord-exceptions myChordExceptions #t) ignatzekExceptions)

hereIsMySusChord = \chordmode {

  \set chordChanges = ##t

  \set chordNameExceptions = #chExceptions

  g:sus4.7  

}

\score {

  \new StaffGroup <<

    \new ChordNames \hereIsMySusChord

    \new Staff {

      %  NOTE: you do not need to include the chords here as notes.  

      %  This is just a demonstration that the notes in the chord are the ones you want.

      \hereIsMySusChord

    }

  >>

}

%{

Side note:  I would not refer to the syntax of the chord formatting library (or most any musical entry) as "scheme".

Lilypond is interpreted by scheme, but it is really a custom syntax unique to lilypond.

Even if you understood scheme, it would not help you one bit in understanding this syntax.

%}

HTH,

David Elaine Alt

415 . 341 .4954                                           "Confusion is highly underrated"

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