+\context {
+ \type "Performer_group"
+ \name VaticanaVoice
+ \alias Voice
+ \consists "Dynamic_performer"
+ \consists "Tie_performer"
+ \consists "Note_performer"
+ \consists "Beam_performer"
+ autoBeaming = ##f % needed for consistent melismata with engravers
+ \consists "Slur_performer"
+}
+
+\context {
+ \type "Performer_group"
+ \name KievanVoice
+ \alias Voice
+ \consists "Dynamic_performer"
+ \consists "Tie_performer"
+ \consists "Note_performer"
+ \consists "Beam_performer"
+ autoBeaming = ##f % needed for consistent melismata with engravers
+ \consists "Slur_performer"
+}
+
+\context {
+ \type "Performer_group"
+ \name MensuralVoice
+ \alias Voice
+ \consists "Dynamic_performer"
+ \consists "Tie_performer"
+ \consists "Note_performer"
+ \consists "Beam_performer"
+ autoBeaming = ##f % needed for consistent melismata with engravers
+ \consists "Slur_performer"
+}
+
+\context {
+ \Voice
+ \remove "Note_performer"
+ \consists "Drum_note_performer"
+ \name DrumVoice
+}
+
+\context {
+ \type "Performer_group"
+ \name FiguredBass
+}
+
+\context {
+ \type "Performer_group"
+ \name FretBoards
+}
+
+\context {
+ \type "Performer_group"
+ \name GrandStaff
+ \accepts RhythmicStaff
+ \accepts Staff
+ \accepts Dynamics
+ \defaultchild Staff
+}