lilypond-common-includes/standalone_output.ly

% set the speed of the midi music
#(define midiQuarterNoteSpeed (if (defined? 'midiQuarterNoteSpeed) midiQuarterNoteSpeed 90))

MUSIC = { \transposable \MUSIC }

% nur Output wenn noStandaloneOutput auf false steht
output = #(if (not noStandaloneOutput)
#{
  \bookpart {
    \HEADER

    \score {
      \MUSIC
      \layout { \LAYOUT }
    }

    \TEXT

    \score {
      \unfoldRepeats { \MUSIC \INLINESCOREMUSIC }
      \midi {
        \context {
          \Score
          % Tempo des midi files
          tempoWholesPerMinute = #(ly:make-moment midiQuarterNoteSpeed 4)
        }
      }
    }


  }
#}
)

% if we don't want a standalone output, cause we compile a book, we just have an empty output here,
% so lilypond does not generate output for this song
\book {
  \bookpart { \output }
}