\version "2.16.1" \include "articulate.ly" \include "clementi-op42-mus-L21-pleyel.ily" % LESSON XXI. Larghetto, by Pleyel. \book { \bookOutputName "clementi-op42-les21-pleyel-lrghetto" \score { \unfoldRepeats \articulate \new PianoStaff << \new Staff = "upper" \LessonXXIUpper \new Staff = "lower" \LessonXXILower >> \midi { } } }