%%% Identification
voixI = \relative c'' 
\context Voice = "voice 1"{ 
	\override Staff.VerticalAxisGroup #'minimum-Y-extent = #'(-6 . 6)
                \override Voice.TextScript #'padding = #2.0
                \override MultiMeasureRest #'expand-limit = 1
                \once \override Staff.TimeSignature #'style = #'()
                \clef "treble"
                \key g \major
                \time 2/2
                \repeat volta 2 {
    \mark \markup { \fontsize #2 "Ritournelle" }                 
        r2 r4 r8 d8
        \bar "|:" d1
        e4 e d4. c8
        b2. b4
        c4 d e d
        c4 b a2   

        } 
}

voixII = \relative c 
\context Voice = "track 2" { 
	\override Voice.TextScript #'padding = #2.0
                \override MultiMeasureRest #'expand-limit = 1
                \once \override Staff.TimeSignature #'style = #'()
                \clef "bass"
                \key g \major
                	
       R1
       r4 r8 g'8 g2
       c,4 c d4. d8
       e4. fis8 g4. g8
       a4 b c b
       a4 g d2 
         
}

%%------------------------------------
%%% Edition portée system 
\score {
<<
	\new Staff  {\voixI 
		
	\new Staff 
		\with { %%colorisation de cette portée
			  \override StaffSymbol #'stencil = #(lambda (grob)
				 (let* ((staff (ly:staff-symbol::print grob))
						(X-ext (ly:stencil-extent staff X))
						(Y-ext (ly:stencil-extent staff Y)))
					  (ly:stencil-add
						(ly:make-stencil (list 'color (rgb-color 1 0.8 0.6)
							(ly:stencil-expr (ly:round-filled-box X-ext Y-ext 0))
							X-ext Y-ext))
						staff)))
			}  
		\voixII 
 >>
 \layout { }
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%