======================== unified (from filesystem) ========================
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                                        'duration'  '268'
                                          'artist'  'O.P. Nayyar'
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                                      'lastfmtags'  "['hindi', 'bollywood', 'indian', 'india', 'rhythm']"
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                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '15'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'loc-asia-india'
                                             'bpm'  '105.1'
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rest: ''

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

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'TBPM' (BPM (beats per minute))                     '105.1'
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'TCON' (Content type, a.k.a. Genre)                 'loc-asia-india'
'TDOR' (Original release time)                      '2001'
'TDRC' (Recording time)                             '2001-10-15'
'TIT2' (Title/songname/content description)         'Mera Naam Chin Chin Chu'
'TKEY' (Initial key)                                '1A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'O.P. Nayyar'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Manteca'
'TRCK' (Track number/Position in set)               '12/15'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Nayyar, O.P.'
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'TXXX:Acoustid Id'                                  '661a13e9-3fd0-4b40-b957-2f3f6c9292b3'
'TXXX:Artists'                                      'O.P. Nayyar'
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'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '198e1cac-83b7-4ae3-9724-3391020f34fb'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '62e64e59-a701-4d2c-8f11-3d934d06e9dd'
'TXXX:MusicBrainz Release Group Id'                 '31d66da4-55c9-3ab6-bd19-36540f784ba0'
'TXXX:MusicBrainz Release Track Id'                 'bf8221f6-4a32-30ec-98bf-5acd6169b678'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['hindi', 'bollywood', 'indian', 'india', 'rhythm']
'TXXX:originalyear'                                 '2001'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.46 dB'
'TXXX:replaygain_track_peak'                        '0.491647'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'c79b36b7-30e0-468e-b65b-d51dabb3b7bc')

========================== row from database ==========================
                                              'id'  1399786
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/asha bhosle & mohd rafi - (india) i love bollywood (2001)/12 - mera naam chin chin chu (from hawrah bridge) - geeta dutt.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  268
                                           'genre'  loc-asia-india
                                        'filesize'  6517346
                                           'mtime'  1621508914
                                   'redo_metaread'  0
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                                      'tag_artist'  O.P. Nayyar
                                     'tag_release'  I ♥ Bollywood: 15 Classic Tracks From Bollywood's Greatest Singers
                                       'tag_title'  Mera Naam Chin Chin Chu
                                             'bpm'  105.1
                                    'search_title'  'chin':3 'chu':4 'mera':1 'naam':2
                                   'search_artist'  'nayyar':4 'o':1 'op':3 'p':2
                                  'search_release'  'bollywood':2,3,7 'bollywoods':9 'classic':4 'from':6 'greatest':10 'i':1 's':8 'singers':11 'tracks':5
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                                    'search_combo'  '00asia':20 '2001':29,30 'asha':21 'asia':43 'bhosle':22 'bollywood':10C,11C,15C,28 'bollywoods':17C 'bridge':38,39 'chin':3A,33 'chu':4A,34 'classic':12C 'dutt':41 'from':14C,35,36 'geeta':40 'greatest':18C 'hawrah':37 'i':9C 'india':25,26 'loc':42 'love':27 'mera':1A,31 'mohd':23 'naam':2A,32 'nayyar':8B 'o':5B 'op':7B 'p':6B 'rafi':24 's':16C 'singers':19C 'tracks':13C
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['hindi', 'bollywood', 'indian', 'india', 'rhythm']
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621508913.703379  (2021-05-20 13:08:33)
                             'size'  6517346