-#include "lily-proto.hh"
-
-#if 0
-
-// sketch. . .
-class Midi_register {
-};
-
-class Midi_group_reg : public Midi_register, public Acceptor {
-
-};
-
-class Midi_staff_reg : public Midi_group_reg {
-};
-
-
-class Midi_note_reg : public Midi_register {
-
-};
-
-class Midi_voice_reg : public Midi_group_reg, public Interpreter {
-
-};
-
-class Midi_score_reg: public Midi_group_reg, public Global_acceptor {
-};
-
-
-#include "grouping.hh"
-#include "staff-walker.hh"
-#include "pcursor.hh"