======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '186'
                                          'artist'  '張露/ 曉露'
                                     'text_people'  '? (China, 20th century)'
                                         'release'  'Ying Chun Hua (Pathe 100: The Series Vol.1)'
                                           'title'  'Spring Flowers'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['chinese']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '23'
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'loc-asia-china'
                                             'bpm'  '84.916'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00000301 00000301 00002111 0000219C 000010BC 000010BC 00005ADE 00005CCD '
 '00002FC1 00002FC1')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000714 00000000007D4BDC 00000000 005AD783 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))                     '84.916'
'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)         'Spring Flowers'
'TKEY' (Initial key)                                '6A'
'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)               '1/23'
'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'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'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'                        '+0.40 dB'
'TXXX:replaygain_track_peak'                        '0.610131'

========================== row from database ==========================
                                              'id'  931737
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/chang loo - xiao loo - pathe 100 the series/01. spring flowers - chang loo.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  186
                                           'genre'  loc-asia-china
                                        'filesize'  6322973
                                           'mtime'  1621629202
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia chang loo xiao loo pathe series 01. spring flowers chang loo loc asia china
                                      'tag_artist'  張露/ 曉露
                                     'tag_release'  Ying Chun Hua (Pathe 100: The Series Vol.1)
                                       'tag_title'  Spring Flowers
                                             'bpm'  84.916
                                    'search_title'  'flowers':2 'spring':1
                                   '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 '01':7,8 'asia':12 'chang':2 'china':13 'flowers':10 'loc':11 'loo':3 'pathe':5 'series':6 'spring':9 'xiao':4
                                    'search_combo'  '00asia':18 '01':24,25 '1':16C '100':11C,12C 'asia':29 'chang':19 'china':30 'chun':7C 'flowers':2A,27 'hua':8C 'loc':28 'loo':20 'pathe':9C,10C,22 'series':14C,23 'spring':1A,26 'the':13C 'vol':15C 'vol1':17C 'xiao':21 'ying':6C '張露':3B,4B '曉露':5B
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  6A
                                           '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-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['chinese']
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629202.2884393  (2021-05-21 22:33:22)
                             'size'  6322973