def get_cleantracks(t_d: dict):
    """
    return concise dict with song ID's and url from results returned from get_albumtrax()
    can use with a corpus of albums and tracks, this is pre-processing step before
    getting the lyrics for the songs
    :param t_d: the raw info on album tracks returned from get_albumtrax
    Returns: a_d
    """
    a_d = {}
    for albid, albdet in t_d.items():
        trk_dict: dict = {}
        for sng in albdet['tracks']:
            song_id = sng['song']['id']
            trk_dict[song_id] = sng['song']['url']
        a_d[albid] = trk_dict

    return a_d