4 texidoc = "@samp{NullVoice} responds to @code{\\change Staff} as a
5 @samp{Voice} would. In consequence, in the first shown system
6 it keeps a single treble-clef staff alive. In the second
7 system, it is in a single bass-clef staff."
10 \layout { ragged-right = ##t }
15 \change Staff = "After"
21 \new StaffGroup \with \RemoveAllEmptyStaves
23 \new Staff = "Before" \new NullVoice \music
24 \new Staff = "After" {
26 $(skip-of-length music)