static Music *make_music_with_input (SCM name, Input where);
SCM check_scheme_arg (Lily_parser *parser, Input loc,
SCM arg, SCM args, SCM pred, SCM disp = SCM_UNDEFINED);
SCM make_music_from_simple (Lily_parser *parser, Input loc, SCM pitch);
static Music *make_music_with_input (SCM name, Input where);
SCM check_scheme_arg (Lily_parser *parser, Input loc,
SCM arg, SCM args, SCM pred, SCM disp = SCM_UNDEFINED);
SCM make_music_from_simple (Lily_parser *parser, Input loc, SCM pitch);