======================== unified (from filesystem) ========================
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                                        'duration'  '170'
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                            'musicbrainz_artistid'  ''
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'TDOR' (Original release time)                      '2005'
'TDRC' (Recording time)                             '2005-09-28'
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'TKEY' (Initial key)                                '9A'
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'TSO2'                                              'Franz Ferdinand'
'TSOP' (Performer sort order)                       'Franz Ferdinand'
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'TXXX:WM/Provider'                                  'AMG'
'TXXX:WM/ProviderRating'                            '6'
'TXXX:WM/ProviderStyle'                             'Rock'
'TXXX:WM/UniqueFileIdentifier'                      'AMGa_id=R   794687;AMGp_id=P   607885;AMGt_id=T  8398621'
'TXXX:WM/Year'                                      '2005'
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'TXXX:q-bass'                                       '3'
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========================== row from database ==========================
                                              'id'  1249805
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Franz Ferdinand/You Could Have It So Much Better/07 Eleanor Put Your Boots On.wma.mp3
                                         'working'  None
                                         'bitrate'  216
                                    'duration_sec'  170
                                           'genre'  ifs-songwriter-indie-rock
                                        'filesize'  4611952
                                           'mtime'  1621697502
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 07 On.wma ifs songwriter indie rock
                                      'tag_artist'  Franz Ferdinand
                                     'tag_release'  You Could Have It So Much Better
                                       'tag_title'  Eleanor Put Your Boots On
                                             'bpm'  138.892
                                    'search_title'  'boots':4 'eleanor':1 'on':5 'put':2 'your':3
                                   'search_artist'  'ferdinand':2 'franz':1
                                  'search_release'  'better':7 'could':2 'have':3 'it':4 'much':6 'so':5 'you':1
                                     'search_rest'  '00singer':1 'eos':3 'ifs':7 'indie':8 'on':4 'onwma':6 'rock':9 'songwriter':2 'wma':5
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                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'Q-PIANO-2', 'q-mixbeat-1', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alternative', 'britpop', 'indie rock', 'rock']
                                        'tag_date'  2005
                                     'discogstags'  ['rock', 'new wave', 'indie rock']

============================== file details ==============================
                                           'mtime'  1621697502.3988585  (2021-05-22 17:31:42)
                             'size'  4611952