#(ly:set-option 'warning-as-error #f)
#(ly:expect-warning (ly:translate-cpp-warning-scheme "cannot find Voice `%s'") "not-existing-notes")
#(ly:set-option 'warning-as-error #f)
#(ly:expect-warning (ly:translate-cpp-warning-scheme "cannot find Voice `%s'") "not-existing-notes")