\version "2.16.1" \include "clementi-op42-mus-L42-cpebach.ily" %-----LESSON 42 - CPE Bach Rondo \score { \new PianoStaff << \new Staff = "upper" { \LessonXLIIUpper } \new Staff = "lower" { \LessonXLIILower } >> \layout{ \context { \PianoStaff \consists #Span_stem_engraver } } }