======================== unified (from filesystem) ========================
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                                        'duration'  '131'
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======================== rawer (from filesystem) ========================

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'artist'                                            'The Ventures'
'artistsort'                                        'Ventures, The'
'asin'                                              'B00005CCM8'
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'date'                                              '1992'
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'disctotal'                                         '1'
'genre'                                             'rock-pop-surf'
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'q-syn'                                             '2'
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'q-vocals'                                          '1'
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'script'                                            'Latn'
'title'                                             'Out of Limits'
'tracknumber'                                       '20'
'tracktotal'                                        '20'

========================== row from database ==========================
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                                    'duration_sec'  131
                                           'genre'  rock-pop-surf
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                                           'mtime'  1620737131
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                                      'num_images'  0
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                                      'lastfmtags'  ['surf', 'instrumental', '60s', 'surf rock', 'rock']
                                        'tag_date'  1992
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737130.9198136  (2021-05-11 14:45:30)
                             'size'  3378380