5 \festival #"song-associated-voice.xml" { \tempo 4 = 100 }
8 << \context Voice = melody {
12 \new Lyrics \lyricmode {
13 \set associatedVoice = #"melody"
17 #(ly:progress "song-associated-voice")
18 #(ly:progress "~a" (ly:gulp-file "song-associated-voice.xml"))