======================== unified (from filesystem) ========================
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                                        'duration'  '302'
                                          'artist'  'Suzanne Vega'
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                                           'title'  'The Queen and the Soldier (live)'
                                           'quals'  "['q-bass-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '96.3'
                                             'key'  'B m'  (10A)
                                        'acoustid'  ''
rest: ''

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

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'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'The Queen and the Soldier (live)'
'TKEY' (Initial key)                                'B m'
'TPE1' (Lead performer(s)/Soloist(s))               'Suzanne Vega'
'TPE2' (Band/orchestra/accompaniment)               'Suzanne Vega'
'TRCK' (Track number/Position in set)               '20'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.82.02, LAME dll 3.93, 128 Kbit/s, Joint Stereo, Normal quality'
'TXXX:MusicBrainz Album Id'                         '8ce3b459-9fcc-4703-a6ec-fab7857fc756'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        'cf119120-7df5-47d7-9dec-49f8837a4e40'
'TXXX:MusicBrainz TRM Id'                           '2cf62d4c-3958-4903-a936-047cfd62d950'
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'TXXX:q-vocals'                                     '4'
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========================== row from database ==========================
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                                            'path'  /data/Music/Other/PrevSet/[0yay1]/Suzanne Vega/The Queen and the Soldier (live).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  302
                                           'genre'  
                                        'filesize'  4846761
                                           'mtime'  1657691031
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [0yay1]
                                      'tag_artist'  Suzanne Vega
                                     'tag_release'  Retrospective: The Best of Suzanne Vega
                                       'tag_title'  The Queen and the Soldier (live)
                                             'bpm'  96.3
                                    'search_title'  'and':3 'live':5,6 'queen':2 'soldier':4 'the':1
                                   'search_artist'  'suzanne':1 'vega':2
                                  'search_release'  'best':4 'of':5 'retrospective':1,2 'suzanne':6 'the':3 'vega':7
                                     'search_rest'  '0yay1':2,3 'prev':4 'prevset':1 'set':5
                                    'search_combo'  '0yay1':17,18 'and':3A 'best':12C 'live':5A,6A 'of':13C 'prev':19 'prevset':16 'queen':2A 'retrospective':9C,10C 'set':20 'soldier':4A 'suzanne':7B,14C 'the':1A,11C 'vega':8B,15C
                                    'tag_tracknum'  20
                                      'num_images'  0
                                             'key'  B m
                                           'quals'  ['q-bass-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4']
                                      'lastfmtags'  []
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1657691031.223523  (2022-07-13 07:43:51)
                             'size'  4846761