======================== unified (from filesystem) ========================
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                                        'duration'  '186'
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                                      'lastfmtags'  "['80s', 'new wave', 'classic rock', 'pop', 'rock']"
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                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  '21'
                                            'date'  '1993'
                                        'comments'  ''
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'TDOR' (Original release time)                      '1993'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'Bombs Away'
'TKEY' (Initial key)                                '10B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Police'
'TPE2' (Band/orchestra/accompaniment)               'The Police'
'TPOS' (Part of a set)                              '2/4'
'TPUB' (Publisher)                                  'A&M Records'
'TRCK' (Track number/Position in set)               '16/21'
'TSO2'                                              'Police, The'
'TSOP' (Performer sort order)                       'Police, The'
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'TXXX:MusicBrainz Album Status'                     'official'
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'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
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'TXXX:q-vocals'                                     '3'
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========================== row from database ==========================
                                              'id'  1311475
                                            'path'  /data/Music/Bulk/00poprockelectronic/Police/[19XX] Best of the Box - Disc 2/16 -  Bombs Away.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  186
                                           'genre'  electronic-we-new wave or post punk
                                        'filesize'  4469807
                                           'mtime'  1620571765
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [19XX] Best of the Disc 2 16 electronic we new wave post punk
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                                     'tag_release'  Message in a Box: The Complete Recordings
                                       'tag_title'  Bombs Away
                                             'bpm'  134.377
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                                   'search_artist'  'police':2 'the':1
                                  'search_release'  'a':3 'box':4,5 'complete':7 'in':2 'message':1 'recordings':8 'the':6
                                     'search_rest'  '00poprockelectronic':1 '19xx':2,3 '2':8 'best':4 'disc':7 'electronic':9 'new':11 'of':5 'post':13 'punk':14 'the':6 'wave':12 'we':10
                                    'search_combo'  '00poprockelectronic':13 '19xx':14,15 '2':20 'a':7C 'away':2A 'best':16 'bombs':1A 'box':8C,9C 'complete':11C 'disc':19 'electronic':21 'in':6C 'message':5C 'new':23 'of':17 'police':4B 'post':25 'punk':26 'recordings':12C 'the':3B,10C,18 'wave':24 'we':22
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'new wave', 'classic rock', 'pop', 'rock']
                                        'tag_date'  1993
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620571764.881093  (2021-05-09 16:49:24)
                             'size'  4469807