======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '530'
                                          'artist'  'Jiang Yuhui'
                                     'text_people'  ''
                                         'release'  'China: The Sonic Avant-Garde (Disc 2)'
                                           'title'  'Ghost In Another Night'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '120.1'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'China: The Sonic Avant-Garde (Disc 2)'
'TBPM' (BPM (beats per minute))                     '120.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Ghost In Another Night'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jiang Yuhui'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.56 dB'
'TXXX:replaygain_track_peak'                        '0.981053'

========================== row from database ==========================
                                              'id'  1381138
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Wang Changcun - china the sonic avant-garde (disc 2)/04 - jiang yuhui - ghost in another night.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  530
                                           'genre'  electronic-unsorted
                                        'filesize'  12740480
                                           'mtime'  1620586595
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Wang Changcun china sonic avant garde (disc 04 jiang yuhui ghost another night electronic unsorted
                                      'tag_artist'  Jiang Yuhui
                                     'tag_release'  China: The Sonic Avant-Garde (Disc 2)
                                       'tag_title'  Ghost In Another Night
                                             'bpm'  120.1
                                    'search_title'  'another':3 'ghost':1 'in':2 'night':4
                                   'search_artist'  'jiang':1 'yuhui':2
                                  'search_release'  '2':10,11 'avant':5 'avantgarde':7 'china':1,2 'disc':8,9 'garde':6 'sonic':4 'the':3
                                     'search_rest'  'another':12 'avant':5 'changcun':2 'china':3 'disc':7,8 'electronic':14 'garde':6 'ghost':11 'jiang':9 'night':13 'sonic':4 'unsorted':15 'wang':1 'yuhui':10
                                    'search_combo'  '2':16C,17C 'another':3A,29 'avant':11C,22 'avantgarde':13C 'changcun':19 'china':7C,8C,20 'disc':14C,15C,24,25 'electronic':31 'garde':12C,23 'ghost':1A,28 'in':2A 'jiang':5B,26 'night':4A,30 'sonic':10C,21 'the':9C 'unsorted':32 'wang':18 'yuhui':6B,27
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-1', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620586595.2322383  (2021-05-09 20:56:35)
                             'size'  12740480