======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '125'
                                          'artist'  'Edison Symphony Orchestra'
                                     'text_people'  ''
                                         'release'  'Wax Cylinder'
                                           'title'  'Down On The Old Plantation'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['1900s', 'instrumental', 'edison', 'edison records', '1908']"
                                     'discogstags'  "['pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1904'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '105.3'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1:eng'                                    'Wax Cylinder'
'PRIV:AverageLevel:b\x0f\x00\x00'                   PRIV(owner='AverageLevel', data=b'b\x0f\x00\x00')
'PRIV:PeakValue:mj\x00\x00'                         PRIV(owner='PeakValue', data=b'mj\x00\x00')
'TALB' (Album/Movie/Show title)                     'Wax Cylinder'
'TBPM' (BPM (beats per minute))                     '105.3'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1904'
'TIT2' (Title/songname/content description)         'Down On The Old Plantation'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Edison Symphony Orchestra'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'pop'
'TXXX:lastfmtags'                                   ['1900s', 'instrumental', 'edison', 'edison records', '1908']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.33 dB'
'TXXX:replaygain_track_peak'                        '0.494409'

========================== row from database ==========================
                                              'id'  511380
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Wax Cylinder／very old recordings： 1878-1920 [wma／32k]/1904 - Edison Symphony Orchestra - Down On The Old Plantation (Wax Cylinder).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  125
                                           'genre'  prerock-band
                                        'filesize'  2005326
                                           'mtime'  1620561439
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Cylinder／very old recordings： 1878 1920 [wma／32k] 1904 (Wax Cylinder) prerock band
                                      'tag_artist'  Edison Symphony Orchestra
                                     'tag_release'  Wax Cylinder
                                       'tag_title'  Down On The Old Plantation
                                             'bpm'  105.3
                                    'search_title'  'down':1 'old':4 'on':2 'plantation':5 'the':3
                                   'search_artist'  'edison':1 'orchestra':3 'symphony':2
                                  'search_release'  'cylinder':2 'wax':1
                                     'search_rest'  '1878':10 '1904':19 '1920':11 '32k':13,15,17 'band':25 'cylinder':1,3,22,23 'cylindervery':5 'old':6 'prerock':24 'recordings':7,8,9 'very':2,4 'wax':20,21 'wma':12,14,16 'wma32k':18
                                    'search_combo'  '1878':20 '1904':29 '1920':21 '32k':23,25,27 'band':35 'cylinder':10C,11,13,32,33 'cylindervery':15 'down':1A 'edison':6B 'old':4A,16 'on':2A 'orchestra':8B 'plantation':5A 'prerock':34 'recordings':17,18,19 'symphony':7B 'the':3A 'very':12,14 'wax':9C,30,31 'wma':22,24,26 'wma32k':28
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['1900s', 'instrumental', 'edison', 'edison records', '1908']
                                        'tag_date'  1904
                                     'discogstags'  ['pop']

============================== file details ==============================
                                           'mtime'  1620561438.9731705  (2021-05-09 13:57:18)
                             'size'  2005326