@classmethod
def convert_to_timestamps(cls, tracks_row_strings):
    """Call this method to transform a '
' separabale string of album tracks (eg copy-pasted from the youtube video description) that represents durations (in hhmmss format)
        to a list of strings with each track's starting timestamp in hhmmss format.

        :param str tracks_row_strings:
        :return: the list of each track's timestamp
        :rtype: list
        """
    lines = cls.parse_hhmmss_string(tracks_row_strings)
    i = 1
    timestamps = ['0:00']
    while i < len(lines):
        timestamps.append(cls.add(timestamps[i - 1], lines[i - 1][-1]))
        i += 1
    return timestamps
