En ajoutant ce qui suit au \layout{ }, les portées qui ne contiennent que des silences ne sont plus gravées :
\context {
\ChoirStaff
% If only one non-empty staff in a system exists, still print the bracket
\override SystemStartBracket.collapse-height = #1
\override SystemStartBar.collapse-height = #1
}
\context {
\Score
% Remove all-rest staves also in the first system
\override VerticalAxisGroup.remove-first = ##t
% If only one non-empty staff in a system exists, still print the starting bar
\override SystemStartBar.collapse-height = #1
}
\context {
\Staff
\RemoveEmptyStaves
}
En espérant que cela aide…