\version "2.19.27"
\include "lilyjazz.ily" 
%-----------------------------------------------
Global=
{
 \numericTimeSignature 
 \set Score.markFormatter = #format-mark-box-alphabet
 \time 4/4
 \key g\major
}
%----------------------------------------------
Couplet =
\lyricmode 
  {
   \override LyricText #'font-size = #2
   \override LyricText #'font-name = # "comic sans ms"
   \set stanza = " 1. "In the bleak mid- win- ter 
 
  }
 %----------------------------------------------
 CoupletA =
\lyricmode 
  {
   \override LyricText #'font-size = #2
   \override LyricText #'font-name = # "comic sans ms"
   our
  }
%----------------------------------------------------
LaVoix =
 \relative c''
 {
  \Global 
   r1 r b4. a8 d4 b|g2 fis|\break
 }
%----------------------------------
 SopranoAlto =
\relative c''
 {
   \Global
   \clef treble
   s2 s4
   <<
     { b|b4. a8 d4 b|g2 fis e4. fis8 g4 e|d1|\break}
    \\
    {}
   >>
 }

%-----------------------------------
 TenorBariton =
 \relative c
  {
    \Global
    \clef bass
    s2 s4<e b>
  }
%------------------------------------------------
 MainDroite =
 \relative c' 
 { %deux voix  a la main droite
  \clef treble
  \Global
  <<
    {<d b'>4<e g><fis d><d fis b><b g'><c e><a g'><c d><b g'><c e><a' fis><c, d>g'2 d'~}
   \\
     {s1 s s b4 c <d fis>2 }
  >>
 }
%
MainGauche =
\relative c  
  {
   \clef bass 
   \Global
   <<
     { <g d'>1~ <g d'><g d'>~<g d'>4~ d'4 g2}
   \\
     { b4 c a s s1 s s4 a b2 }
   >>
 } 
%-----------------------------------------------
% Déclaration des Instruments
%------------------------------------------------
LeChoeur =        
<<
   \context Voice = Choeur
   \SopranoAlto
   \context Lyrics = CoupletA\lyricsto Choeur  \CoupletA
>>
%-------------------------------------------------------
LeChant = 
  << 
    \context Voice = voix
     \LaVoix
     \context Lyrics = Couplet\lyricsto voix  \Couplet
  >>
%-----------------------------------------------
 LePiano =
 \new PianoStaff 
  << % les portées piano
     \new Staff { \MainDroite }
     \new Staff { \MainGauche }
  >>
%-----------------------------------------------
\score 
  {
   <<
     \LeChant
     \LePiano
   >>
    \layout {  indent = 0.8\cm
                    short-indent = 0.5\cm }
  }
%------------------------------------
 \score 
 {
  \new StaffGroup
  <<  
     \new Staff  \SopranoAlto
     \addlyrics
     {
      \override ChordNames.ChordName.font-family = #'roman
      \override ChordNames . ChordName #'font-size = #2
       Girls and boys come  out to play,
      The  moon doth shine as  bright as day; 
     }
    \new Staff \TenorBariton
  >>
     \layout {  indent = 0.8\cm
                    short-indent = 0.5\cm }
 }