======================== unified (from filesystem) ========================
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                                        'duration'  '146'
                                          'artist'  'Charlie Buckett Featuring Mr. Slugworth'
                                     'text_people'  ''
                                         'release'  'Your Guide To The Rock Apocalypse'
                                           'title'  'Mr. Wilkinson'
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  '37'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-cppex-experimental or noise'
                                             'bpm'  '93.199'
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                                        'acoustid'  ''
rest: ''

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

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'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-experimental or noise'
'TDRC' (Recording time)                             '2000'
'TENC' (Encoded by)                                 'iTunes 9.0'
'TIT2' (Title/songname/content description)         'Mr. Wilkinson'
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'TPE1' (Lead performer(s)/Soloist(s))               'Charlie Buckett Featuring Mr. Slugworth'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
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'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '2'
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'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
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'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
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'TXXX:replaygain_track_peak'                        '0.537699'

========================== row from database ==========================
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                                    'duration_sec'  146
                                           'genre'  rock-cppex-experimental or noise
                                        'filesize'  5876465
                                           'mtime'  1620736009
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                                      'tag_artist'  Charlie Buckett Featuring Mr. Slugworth
                                     'tag_release'  Your Guide To The Rock Apocalypse
                                       'tag_title'  Mr. Wilkinson
                                             'bpm'  93.199
                                    'search_title'  'mr':1,2 'wilkinson':3
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                                    'tag_tracknum'  19
                                      'num_images'  0
                                             'key'  1A
                                           '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-4', 'q-syn-2', 'q-chart-1', 'q-other-1', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736009.1757627  (2021-05-11 14:26:49)
                             'size'  5876465