};
SCM ly_transpose_key_alist (SCM l, SCM pit);
-Pitch music_list_to_relative (SCM l,Pitch p, bool ret_first);
+Pitch music_list_to_relative (SCM l, Pitch p, bool ret_first);
void transpose_music_list (SCM , Pitch);
void compress_music_list (SCM, Moment);