- virtual bool try_music (Music *);
- virtual void build_ligature (Spanner *ligature, Array<Grob_info> primitives);
+ Gregorian_ligature_engraver ();
+
+ virtual void listen_pes_or_flexa (Stream_event *ev);
+ virtual void build_ligature (Spanner *ligature, vector<Grob_info> primitives);