======================== unified (from filesystem) ========================
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                                        'duration'  '83'
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                                      'lastfmtags'  "['jazz', 'hip hop', 'funk', 'rap']"
                             'musicbrainz_albumid'  ''
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                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  '34'
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '137.013'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

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'TDRC' (Recording time)                             '2007'
'TENC' (Encoded by)                                 'iTunes v7.3.1'
'TIT2' (Title/songname/content description)         'In The Cave'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Madlib'
'TPE2' (Band/orchestra/accompaniment)               'Madlib'
'TRCK' (Track number/Position in set)               '24/34'
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'TXXX:lastfmtags'                                   ['jazz', 'hip hop', 'funk', 'rap']
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Medicine Show # 4_ Beat Konducta In India/24 In The Cave.mp3
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                                    'duration_sec'  83
                                           'genre'  hip hop or rnb or rap or turntablism;set-pl-shirleyspinoza;set-pl-mor
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                                           'mtime'  1620528687
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                                     'tag_release'  Medicine Show # 4: Beat Konducta In India
                                       'tag_title'  In The Cave
                                             'bpm'  137.013
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                                    'tag_tracknum'  24
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'hip hop', 'funk', 'rap']
                                        'tag_date'  2007
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528687.2800953  (2021-05-09 04:51:27)
                             'size'  2787206