======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '415'
                                          'artist'  'Bob Dylan'
                                     'text_people'  'Bob Dylan'
                                         'release'  "The Freewheelin' Bob Dylan"
                                           'title'  "A Hard Rain's A-Gonna Fall"
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
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 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
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                                      'lastfmtags'  "['folk rock', 'rock', 'classic rock', 'folk', 'singer songwriter']"
                                     'discogstags'  "['folk, world, & country', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '13'
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-rock'
                                             'bpm'  '126.4'
                                             'key'  '4A'
                                        'acoustid'  '044ff34e-dd7d-4c61-90e6-a622c4f69a80'
rest: ''

======================== rawer (from filesystem) ========================

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'PRIV:WM/WMCollectionID:!é\x8c3\x99\x17FN¡¦\x84¿ºÓµ»'  PRIV(owner='WM/WMCollectionID', data=b'!\xe9\x8c3\x99\x17FN\xa1\xa6\x84\xbf\xba\xd3\xb5\xbb')
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'TALB' (Album/Movie/Show title)                     "The Freewheelin' Bob Dylan"
'TBPM' (BPM (beats per minute))                     '126.4'
'TCOM' (Composer)                                   'Bob Dylan'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-rock'
'TDOR' (Original release time)                      '1963'
'TDRC' (Recording time)                             '1989-07-05'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'Tom Wilson'], ['lead vocals', 'Bob Dylan']])
'TIT2' (Title/songname/content description)         "A Hard Rain's A-Gonna Fall"
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Bob Dylan'
'TPE2' (Band/orchestra/accompaniment)               'Bob Dylan'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'CBS'
'TRCK' (Track number/Position in set)               '6/13'
'TSO2'                                              'Dylan, Bob'
'TSOP' (Performer sort order)                       'Dylan, Bob'
'TSRC' (ISRC (international standard recording code))  'USSM10307248/USSM16201242/USSM19922902'
'TXXX:ASIN'                                         'B000026BD1'
'TXXX:Acoustid Id'                                  '044ff34e-dd7d-4c61-90e6-a622c4f69a80'
'TXXX:Artists'                                      'Bob Dylan'
'TXXX:BARCODE'                                      '5099703239027'
'TXXX:CATALOGNUMBER'                                'CDCBS 32390'
'TXXX:MusicBrainz Album Artist Id'                  '72c536dc-7137-4477-a521-567eeb840fa8'
'TXXX:MusicBrainz Album Id'                         'e7316c28-2d07-32c5-ae5c-e096c509b04d'
'TXXX:MusicBrainz Album Release Country'            'XE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '72c536dc-7137-4477-a521-567eeb840fa8'
'TXXX:MusicBrainz Release Group Id'                 '169b62aa-c3a5-3ed9-bed1-cc47c4bc51ad'
'TXXX:MusicBrainz Release Track Id'                 '6a3842cc-6255-3be1-a659-6f4a5ef2ecaf'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['folk, world, & country', 'folk']
'TXXX:lastfmtags'                                   ['folk rock', 'rock', 'classic rock', 'folk', 'singer songwriter']
'TXXX:originalyear'                                 '1963'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.17 dB'
'TXXX:replaygain_track_peak'                        '0.639523'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'536247b1-a87a-40c7-93e8-dd02fe3f3d54')

========================== row from database ==========================
                                              'id'  1528501
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Bob Dylan/1963 - The Freewheelin_ Bob Dylan/06 A Hard Rain_s A-Gonna Fall.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  415
                                           'genre'  ifs-songwriter-rock
                                        'filesize'  10069412
                                           'mtime'  1637522970
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 1963 Freewheelin_ 06 Rain_s ifs songwriter rock
                                      'tag_artist'  Bob Dylan
                                     'tag_release'  The Freewheelin' Bob Dylan
                                       'tag_title'  A Hard Rain's A-Gonna Fall
                                             'bpm'  126.4
                                    'search_title'  'a':1,6 'agonna':8 'fall':9 'gonna':7 'hard':2 'rain':3 'rains':5 's':4
                                   'search_artist'  'bob':1 'dylan':2
                                  'search_release'  'bob':4 'dylan':5 'freewheelin':2,3 'the':1
                                     'search_rest'  '00singer':1 '1963':4 'eos':3 'freewheelin':5 'ifs':8 'rain':6 'rock':9 's':7 'songwriter':2
                                    'search_combo'  '00singer':17 '1963':20 'a':1A,6A 'agonna':8A 'bob':10B,15C 'dylan':11B,16C 'eos':19 'fall':9A 'freewheelin':13C,14C,21 'gonna':7A 'hard':2A 'ifs':24 'rain':3A,22 'rains':5A 'rock':25 's':4A,23 'songwriter':18 'the':12C
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['folk rock', 'rock', 'classic rock', 'folk', 'singer songwriter']
                                        'tag_date'  1989
                                     'discogstags'  ['folk, world, & country', 'folk']

============================== file details ==============================
                                           'mtime'  1637522969.5890307  (2021-11-21 20:29:29)
                             'size'  10069412