\version "2.16.1" \include "clementi-op42-mus-L39-beethoven.ily" % LESSON XXXIX. Waltz, by Beethoven. \score { \new PianoStaff << \new Staff = "upper" \LessonXXXIXUpperVoltaA \new Staff = "lower" \LessonXXXIXLowerVoltaA >> \layout { } }