- String to_type = ly_scm2string (get_music ()->get_mus_property ("change-to-type"));
- String to_id = ly_scm2string (get_music ()->get_mus_property ("change-to-id"));
+ String to_type = ly_symbol2string (get_music ()->get_mus_property ("change-to-type"));
+ String to_id = ly_scm2string (get_music ()->get_mus_property ("change-to-id"));