======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '121'
                                          'artist'  'Wang Changcun'
                                     'text_people'  ''
                                         'release'  'China: The Sonic Avant-Garde (Disc 2)'
                                           'title'  'Dfaonocle'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['field recording', 'noise', 'electronic', 'chinese', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '89.9'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'China: The Sonic Avant-Garde (Disc 2)'
'TBPM' (BPM (beats per minute))                     '89.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Dfaonocle'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Wang Changcun'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['field recording', 'noise', 'electronic', 'chinese', 'experimental']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.71 dB'
'TXXX:replaygain_track_peak'                        '0.501549'

========================== row from database ==========================
                                              'id'  1365845
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Wang Changcun - china the sonic avant-garde (disc 2)/09 - wang changcun - dfaonocle.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  121
                                           'genre'  electronic-unsorted
                                        'filesize'  2930419
                                           'mtime'  1620586595
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm china the sonic avant garde (disc 09 wang changcun dfaonocle electronic unsorted
                                      'tag_artist'  Wang Changcun
                                     'tag_release'  China: The Sonic Avant-Garde (Disc 2)
                                       'tag_title'  Dfaonocle
                                             'bpm'  89.9
                                    'search_title'  'dfaonocle':1
                                   'search_artist'  'changcun':2 'wang':1
                                  'search_release'  '2':10,11 'avant':5 'avantgarde':7 'china':1,2 'disc':8,9 'garde':6 'sonic':4 'the':3
                                     'search_rest'  'avant':4 'changcun':9 'china':1 'dfaonocle':10 'disc':6,7 'electronic':11 'garde':5 'sonic':3 'the':2 'unsorted':12 'wang':8
                                    'search_combo'  '2':13C,14C 'avant':8C,18 'avantgarde':10C 'changcun':3B,23 'china':4C,5C,15 'dfaonocle':1A,24 'disc':11C,12C,20,21 'electronic':25 'garde':9C,19 'sonic':7C,17 'the':6C,16 'unsorted':26 'wang':2B,22
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['field recording', 'noise', 'electronic', 'chinese', 'experimental']
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620586595.46762  (2021-05-09 20:56:35)
                             'size'  2930419