======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '175'
                                          'artist'  '張露/ 曉露'
                                     'text_people'  '? (China, 20th century)'
                                         'release'  'Ying Chun Hua (Pathe 100: The Series Vol.1)'
                                           'title'  'Chinese Mambo'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['chinese']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '23'
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'loc-asia-china'
                                             'bpm'  '136.551'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 0000020E 0000020E 00001F61 00001F52 0000AA4E 0000AA4E 000052AC 00005694 '
 '00002749 00002749')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 0000099C 000000000075EBD4 00000000 00557F59 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '23+F6F64579BFE322F5E9BB26F9F9A0B969+10529491'
'TALB' (Album/Movie/Show title)                     'Ying Chun Hua (Pathe 100: The Series Vol.1)'
'TBPM' (BPM (beats per minute))                     '136.551'
'TCOM' (Composer)                                   '? (China, 20th century)'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-china'
'TDRC' (Recording time)                             '2004'
'TENC' (Encoded by)                                 'iTunes 8.2'
'TIT2' (Title/songname/content description)         'Chinese Mambo'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Chang Loo'
'TPE2' (Band/orchestra/accompaniment)               '張露/ 曉露'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '11/23'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   'chinese'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.07 dB'
'TXXX:replaygain_track_peak'                        '0.673719'

========================== row from database ==========================
                                              'id'  931420
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/chang loo - xiao loo - pathe 100 the series/11. chinese mambo - chang loo.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  175
                                           'genre'  loc-asia-china
                                        'filesize'  5972722
                                           'mtime'  1621629203
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia chang loo xiao loo pathe series 11. chinese mambo chang loo loc asia china
                                      'tag_artist'  張露/ 曉露
                                     'tag_release'  Ying Chun Hua (Pathe 100: The Series Vol.1)
                                       'tag_title'  Chinese Mambo
                                             'bpm'  136.551
                                    'search_title'  'chinese':1 'mambo':2
                                   'search_artist'  '張露':1,2 '曉露':3
                                  'search_release'  '1':11 '100':6,7 'chun':2 'hua':3 'pathe':4,5 'series':9 'the':8 'vol':10 'vol1':12 'ying':1
                                     'search_rest'  '00asia':1 '11':7,8 'asia':12 'chang':2 'china':13 'chinese':9 'loc':11 'loo':3 'mambo':10 'pathe':5 'series':6 'xiao':4
                                    'search_combo'  '00asia':18 '1':16C '100':11C,12C '11':24,25 'asia':29 'chang':19 'china':30 'chinese':1A,26 'chun':7C 'hua':8C 'loc':28 'loo':20 'mambo':2A,27 'pathe':9C,10C,22 'series':14C,23 'the':13C 'vol':15C 'vol1':17C 'xiao':21 'ying':6C '張露':3B,4B '曉露':5B
                                    'tag_tracknum'  11
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['chinese']
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629202.539198  (2021-05-21 22:33:22)
                             'size'  5972722