\version "2.13.17" %\version  "2.12.3"
%%-----------------------------------
%%1er solution
reservoirOn = 
 	\override Stem #'stencil = #(make-stencil-boxer 0.1 1.0 ly:stem::print)

reservoirOff = \revert Stem #'stencil

%%2em solution 
reservoir = \markup { 
	%\box %\rounded-box
	\score { 
		\new Staff
		\with { 
			\remove "Time_signature_engraver" 
			  \remove "Clef_engraver" 
		}
		\relative c' { \autoBeamOff e'8^\markup "reservoir" d d c4 } %reservoir de notes
		\layout { ragged-right = ##t }
	} 
}
%%------
\new Voice
\with {  \consists "Balloon_engraver" } %util pour la 2em solution
 \relative c'' {
 	 c8 c c d 
 	 \reservoirOn %1er solution
	 e4  d 
	 \reservoirOff 
 	 
	 c8 c c d
	 %2em solution
	 <e-\balloonText #'( 0.5 . 2) \markup { \reservoir }>4
	 d
}
%%-----------------------------------