\version "2.16.0"

rhythmMarkCStaffReduce = #-4
rhythmMarkCLabelFontSize = #-2

rhythmMarkC = #(define-music-function (parser location label musicI musicII ) (string? ly:music? ly:music?)
   #{
      \mark \markup
      {
        \combine

          \line {
            \hspace #0
            \translate #'(-0.1 . -3.25) \italic \fontsize #rhythmMarkCLabelFontSize $label
          } % end Line

          \line \vcenter {

              \score {                 % 1st column in line

                \new Staff \with {
                  fontSize = #rhythmMarkCStaffReduce
                  \override StaffSymbol #'staff-space = #(magstep rhythmMarkCStaffReduce)
                  \override StaffSymbol #'line-count = #0 
                  \override VerticalAxisGroup #'Y-extent = #'(0 . 0)  % td
                }

                \relative { \stemUp $musicI }

                \layout {
                  ragged-right= ##t
                  indent = 0
                  \context {
                    \Staff
                    \remove "Clef_engraver"
                    \remove "Time_signature_engraver" }
                } % layout

              } % 1st score

              \hspace #-0.1            % 2nd column in line

                                       % 3rd column in line
              \italic \fontsize #rhythmMarkCStaffReduce "="

              \score {                 % 4th column in line

                \new Staff \with {
                  fontSize = #rhythmMarkCStaffReduce
                  \override StaffSymbol #'staff-space = #(magstep rhythmMarkCStaffReduce)
                  \override StaffSymbol #'line-count = #0 
                  \override VerticalAxisGroup #'Y-extent = #'(0 . 0)  % td
                }

                \relative {
                  \stemUp $musicII
                }

                \layout {
                  ragged-right= ##t
                  indent = 0
                  \context {
                    \Staff
                    \remove "Clef_engraver"
                    \remove "Time_signature_engraver" }
                } % layout

              } % 2nd score end

            } % line end
          % end combine
        } % markup end
   #})
%variables 
rhyMarkEighth = { b'8 }

trumpet = \relative c'' {
\set Staff.instrumentName = "trpt"
\clef G
\key cis \major
\time 6/8
\repeat volta 2 {f4. g4 f8 ees c ees c ees c 
ees4. f4 ees8 des bes des bes des bes
des4. ees4 des8 b aes r r4. 
\time 4/4 %modulacion metrica
f8\rhythmMarkC #"" \rhyMarkEighth \rhyMarkEighth  gis c dis~ dis d c cis ais r2.
}
\score {
\trumpet
\layout {}
\midi {}
}