@classmethod
def _extract_note_part(cls, item_part, token_list):
    """
        Extracts the given part from the note
        token list

        :param item_part: element from the NOTE_SCHEME
        :type item_part: tuple
        :param token_list: list of note tokens
        """
    _start = item_part[cls.POSITION]
    _end = item_part[cls.POSITION] + item_part[cls.LEN]
    return token_list[_start:_end]
