======================== unified (from filesystem) ========================
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                                        'duration'  '229'
                                          'artist'  'Лидия Кавина'
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                                           'title'  'Suite: I. Andante'
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                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '12'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'mi-theremin'
                                             'bpm'  '133.0'
                                             'key'  '6A'
                                        'acoustid'  '8917b184-4232-49c4-8d7e-bfd1e58e10d2'
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'TDOR' (Original release time)                      '1999'
'TDRC' (Recording time)                             '1999'
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'TIT2' (Title/songname/content description)         'Suite: I. Andante'
'TKEY' (Initial key)                                '6A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Лидия Кавина'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Mode'
'TRCK' (Track number/Position in set)               '7/12'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Kavina, Lydia'
'TXXX:Acoustid Id'                                  '8917b184-4232-49c4-8d7e-bfd1e58e10d2'
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'TXXX:Q-PIANO'                                      '4'
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'TXXX:q-bass'                                       '1'
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'TXXX:q-chart'                                      '1'
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========================== row from database ==========================
                                              'id'  772555
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Music From The Ether_ Original Works For Theremin/07 Suite - Andante.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  229
                                           'genre'  mi-theremin
                                        'filesize'  9190862
                                           'mtime'  1620528003
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm From Ether_ For 07 theremin
                                      'tag_artist'  Лидия Кавина
                                     'tag_release'  Music from the Ether: Original Works for Theremin
                                       'tag_title'  Suite: I. Andante
                                             'bpm'  133.0
                                    'search_title'  'andante':5 'i':3,4 'suite':1,2
                                   'search_artist'  'kavina':4 'lidiya':2 'кавина':3 'лидия':1
                                  'search_release'  'ether':4,5 'for':8 'from':2 'music':1 'original':6 'the':3 'theremin':9 'works':7
                                     'search_rest'  'ether':2 'for':3 'from':1 'theremin':4
                                    'search_combo'  'andante':5A 'ether':13C,14C,20 'for':17C,21 'from':11C,19 'i':3A,4A 'kavina':9B 'lidiya':7B 'music':10C 'original':15C 'suite':1A,2A 'the':12C 'theremin':18C,22 'works':16C 'кавина':8B 'лидия':6B
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1999
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528003.2569997  (2021-05-09 04:40:03)
                             'size'  9190862