======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '252'
                                          'artist'  'Stella Mayhew'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "I'm A Woman Of Importance [speech]"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-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-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['1900s', 'edison records', '1909']"
                                     'discogstags'  "['novelty', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1910'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-female'
                                             'bpm'  '106.3'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TBPM' (BPM (beats per minute))                     '106.3'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal-female'
'TDRC' (Recording time)                             '1910'
'TIT2' (Title/songname/content description)         "I'm A Woman Of Importance [speech]"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Stella Mayhew'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['novelty', 'pop']
'TXXX:lastfmtags'                                   ['1900s', 'edison records', '1909']
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.22 dB'
'TXXX:replaygain_track_peak'                        '0.640539'

========================== row from database ==========================
                                              'id'  1499328
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Wax Cylinder／very old recordings： 1878-1920 [wma／32k]/1910 - Stella Mayhew - I_m A Woman Of Importance [speech].mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  252
                                           'genre'  prerock-vocal-female
                                        'filesize'  4041150
                                           'mtime'  1621625790
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Wax Cylinder／very old recordings： 1878 1920 [wma／32k] 1910 I_m prerock vocal female
                                      'tag_artist'  Stella Mayhew
                                     'tag_release'  None
                                       'tag_title'  I'm A Woman Of Importance [speech]
                                             'bpm'  106.3
                                    'search_title'  'a':4 'i':1 'im':3 'importance':7 'm':2 'of':6 'speech':8,9 'woman':5
                                   'search_artist'  'mayhew':2 'stella':1
                                  'search_release'  
                                     'search_rest'  '1878':11 '1910':20 '1920':12 '32k':14,16,18 'cylinder':2,4 'cylindervery':6 'female':25 'i':21 'm':22 'old':7 'prerock':23 'recordings':8,9,10 'very':3,5 'vocal':24 'wax':1 'wma':13,15,17 'wma32k':19
                                    'search_combo'  '1878':22 '1910':31 '1920':23 '32k':25,27,29 'a':4A 'cylinder':13,15 'cylindervery':17 'female':36 'i':1A,32 'im':3A 'importance':7A 'm':2A,33 'mayhew':11B 'of':6A 'old':18 'prerock':34 'recordings':19,20,21 'speech':8A,9A 'stella':10B 'very':14,16 'vocal':35 'wax':12 'wma':24,26,28 'wma32k':30 'woman':5A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['1900s', 'edison records', '1909']
                                        'tag_date'  1910
                                     'discogstags'  ['novelty', 'pop']

============================== file details ==============================
                                           'mtime'  1621625789.6282098  (2021-05-21 21:36:29)
                             'size'  4041150