======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '226'
                                          'artist'  'Ying diao'
                                     'text_people'  ''
                                         'release'  'Chine - Musique Classique - Ocora'
                                           'title'  " L'Air des ombres - Vihle ` quatre cordes sihu - Liu Jun"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-asia-china'
                                             'bpm'  '140.335'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Chine - Musique Classique - Ocora'
'TBPM' (BPM (beats per minute))                     '140.335'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-china'
'TIT2' (Title/songname/content description)         " L'Air des ombres - Vihle ` quatre cordes sihu - Liu Jun"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Ying diao'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+2.39 dB'
'TXXX:replaygain_track_peak'                        '0.534994'
'TXXX:tracknum'                                     '08'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'239a78cc-a898-4153-9dd6-778882b91413')

========================== row from database ==========================
                                              'id'  1515194
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/CHINE - Musique Classique/08. Ying diao - L_Air des ombres - Vièle à quatre cordes sihu - Liu Jun.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  226
                                           'genre'  loc-asia-china
                                        'filesize'  7377441
                                           'mtime'  1621626980
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia CHINE 08. L_Air Vièle à loc asia china
                                      'tag_artist'  Ying diao
                                     'tag_release'  Chine - Musique Classique - Ocora
                                       'tag_title'   L'Air des ombres - Vihle ` quatre cordes sihu - Liu Jun
                                             'bpm'  140.335
                                    'search_title'  'air':2 'cordes':8 'des':4 'jun':11 'l':1 'lair':3 'liu':10 'ombres':5 'quatre':7 'sihu':9 'vihle':6
                                   'search_artist'  'diao':2 'ying':1
                                  'search_release'  'chine':1 'classique':3 'musique':2 'ocora':4
                                     'search_rest'  '00asia':1 '08':3,4 'a':9,10 'air':6 'asia':12 'china':13 'chine':2 'l':5 'loc':11 'viele':7,8
                                    'search_combo'  '00asia':18 '08':20,21 'a':26,27 'air':2A,23 'asia':29 'china':30 'chine':14C,19 'classique':16C 'cordes':8A 'des':4A 'diao':13B 'jun':11A 'l':1A,22 'lair':3A 'liu':10A 'loc':28 'musique':15C 'ocora':17C 'ombres':5A 'quatre':7A 'sihu':9A 'viele':24,25 'vihle':6A 'ying':12B
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621626980.2418573  (2021-05-21 21:56:20)
                             'size'  7377441