- Music * element_p_;
- Music_wrapper (Music*);
- virtual void transpose (Musical_pitch);
- virtual void do_print () const;
- DECLARE_MY_RUNTIME_TYPEINFO;
- VIRTUAL_COPY_CONS (Music_wrapper, Music);
- Music_wrapper (Music_wrapper const&);
- virtual MInterval time_int () const;
- virtual ~Music_wrapper ();
+ DECLARE_SCHEME_CALLBACK (length_callback, (SCM));
+ DECLARE_SCHEME_CALLBACK (start_callback, (SCM));