======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '322'
                                          'artist'  'Leonard Cohen'
                                     'text_people'  ''
                                         'release'  'Greatest Hits'
                                           'title'  'Love Itself'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
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                                      'lastfmtags'  "['blues', 'canadian', 'rock', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'folk rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  '14'
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '93'
                                             'key'  '4A'
                                        'acoustid'  '23acb079-6bae-4ff3-9924-8ba19b0c5d84'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         ' '
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'TBPM' (BPM (beats per minute))                     '93'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDOR' (Original release time)                      '2008'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'Love Itself'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Leonard Cohen'
'TPE2' (Band/orchestra/accompaniment)               'Leonard Cohen'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'Star Mark'
'TRCK' (Track number/Position in set)               '13/14'
'TSO2'                                              'Cohen, Leonard'
'TSOP' (Performer sort order)                       'Cohen, Leonard'
'TSRC' (ISRC (international standard recording code))  'NLB630100138'
'TXXX:Acoustid Id'                                  '23acb079-6bae-4ff3-9924-8ba19b0c5d84'
'TXXX:Artists'                                      'Leonard Cohen'
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'TXXX:CATALOGNUMBER'                                '16222-1/16222-1/2/16222-2'
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'TXXX:MusicBrainz Album Id'                         '631daf49-c580-404e-98dc-1fc0e8fba5ba'
'TXXX:MusicBrainz Album Release Country'            'RU'
'TXXX:MusicBrainz Album Status'                     'bootleg'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '65314b12-0e08-43fa-ba33-baaa7b874c15'
'TXXX:MusicBrainz Release Group Id'                 'ea3c2bd0-742e-43a6-851f-a7c6af04023c'
'TXXX:MusicBrainz Release Track Id'                 'e923c9a5-88f4-3b12-bf5a-3cd704fd7fd8'
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'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'                                  ['rock', 'folk rock']
'TXXX:lastfmtags'                                   ['blues', 'canadian', 'rock', 'folk', 'singer songwriter']
'TXXX:originalyear'                                 '2008'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-5.36 dB'
'TXXX:replaygain_track_peak'                        '1.028056'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'03f720ba-4f36-4f61-808c-04774705b6f1')

========================== row from database ==========================
                                              'id'  1243826
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Leonard Cohen - CD1/13. Leonard Cohen - Love Itself.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  322
                                           'genre'  ifs-songwriter
                                        'filesize'  12949477
                                           'mtime'  1622658720
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos CD1 13. ifs songwriter
                                      'tag_artist'  Leonard Cohen
                                     'tag_release'  Greatest Hits
                                       'tag_title'  Love Itself
                                             'bpm'  93.0
                                    'search_title'  'itself':2 'love':1
                                   'search_artist'  'cohen':2 'leonard':1
                                  'search_release'  'greatest':1 'hits':2
                                     'search_rest'  '00singer':1 '13':5,6 'cd1':4 'eos':3 'ifs':7 'songwriter':2
                                    'search_combo'  '00singer':7 '13':11,12 'cd1':10 'cohen':4B 'eos':9 'greatest':5C 'hits':6C 'ifs':13 'itself':2A 'leonard':3B 'love':1A 'songwriter':8
                                    'tag_tracknum'  13
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'canadian', 'rock', 'folk', 'singer songwriter']
                                        'tag_date'  2008
                                     'discogstags'  ['rock', 'folk rock']

============================== file details ==============================
                                           'mtime'  1622658720.3246741  (2021-06-02 20:32:00)
                             'size'  12949477