if global_options.beams and \
str[0] in '^=_ABCDEFGabcdefg' and \
not parser_state.parsing_beam and \
not parser_state.parsing_tuplet:
parser_state.parsing_beam = 1
voices_append_back( '[' )
if global_options.beams and \
str[0] in '^=_ABCDEFGabcdefg' and \
not parser_state.parsing_beam and \
not parser_state.parsing_tuplet:
parser_state.parsing_beam = 1
voices_append_back( '[' )