======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '708'
                                          'artist'  'Yo La Tengo'
                                     'text_people'  ''
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                                           'title'  'The Story of Yo La Tango'
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                                      'lastfmtags'  "['indie', 'indie pop', 'alternative', 'indie rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  '15'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-unsorted;ifs-songwriter-indie-pop;rock-pop-indie'
                                             'bpm'  '135.004'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

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'COMM:iTunNORM:eng'                                 (' 00001B69 00001C1B 0001190B 0000841A 0009D939 000882E0 000085F4 0000876F '
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'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000AEC 0000000001DCD804 00000000 00000000 00000000 '
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'COMM:iTunes_CDDB_IDs:eng'                          '15+6CA685993BE583D09896261F3F60B23D+7928043'
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'TBPM' (BPM (beats per minute))                     '135.004'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-indie-unsorted', 'ifs-songwriter-indie-pop', 'rock-pop-indie']
'TDRC' (Recording time)                             '2006'
'TENC' (Encoded by)                                 'iTunes v6.0.5'
'TIT2' (Title/songname/content description)         'The Story of Yo La Tango'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Yo La Tengo'
'TRCK' (Track number/Position in set)               '15/15'
'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:lastfmtags'                                   ['indie', 'indie pop', 'alternative', 'indie rock', 'rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.34 dB'
'TXXX:replaygain_track_peak'                        '0.379493'

========================== row from database ==========================
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                                         'working'  None
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                                    'duration_sec'  708
                                           'genre'  ifs-songwriter-indie-unsorted;ifs-songwriter-indie-pop;rock-pop-indie
                                        'filesize'  17011105
                                           'mtime'  1638544533
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                                     'tag_release'  I Am Not Afraid of You and I Will Beat Your Ass
                                       'tag_title'  The Story of Yo La Tango
                                             'bpm'  135.004
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                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', '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-4', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'indie pop', 'alternative', 'indie rock', 'rock']
                                        'tag_date'  2006
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1638544532.7814577  (2021-12-03 16:15:32)
                             'size'  17011105