======================== unified (from filesystem) ========================
                                         'bitrate'  '238.426'
                                        'duration'  '340'
                                          'artist'  'Cornelius'
                                     'text_people'  '小山田圭吾'
                                         'release'  'Point'
                                           'title'  'Fly'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronica', 'shibuya kei', 'alternative', 'electronic', 'japanese']"
                                     'discogstags'  "['electronic', 'rock', 'pop', 'abstract', 'idm', 'experimental', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '11'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;loc-asia-japan-jrock-shibuyakei'
                                             'bpm'  '113.964'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00001B4F 00001F15 0001659C'
'COMM:iTunNORM:eng'                                 (' 00001B4F 00001F15 0001659C 00013ADF 00042400 0004346D 00009624 0000990C '
 '00026F0F 00026AFA')
'COMM:iTunes_CDDB_IDs:eng'                          '11+04989D7AA90B79B7B43EFE8FB3F3573E+1557226'
'TALB' (Album/Movie/Show title)                     'Point'
'TBPM' (BPM (beats per minute))                     '113.964'
'TCOM' (Composer)                                   '小山田圭吾'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'loc-asia-japan-jrock-shibuyakei']
'TDRC' (Recording time)                             '2001'
'TENC' (Encoded by)                                 'iTunes v4.9'
'TIT2' (Title/songname/content description)         'Fly'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Cornelius'
'TPE2' (Band/orchestra/accompaniment)               'Cornelius'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '10/11'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'rock', 'pop', 'abstract', 'idm', 'experimental', 'indie rock']
'TXXX:lastfmtags'                                   ['electronica', 'shibuya kei', 'alternative', 'electronic', 'japanese']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.51 dB'
'TXXX:replaygain_track_peak'                        '0.383787'

========================== row from database ==========================
                                              'id'  930365
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Cornelius/[2001] Point/10 Fly.mp3
                                         'working'  None
                                         'bitrate'  238
                                    'duration_sec'  340
                                           'genre'  loc-asia-japan;loc-asia-japan-jrock-shibuyakei
                                        'filesize'  10152143
                                           'mtime'  1637020041
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia [2001] 10 loc asia japan;loc asia japan jrock shibuyakei
                                      'tag_artist'  Cornelius
                                     'tag_release'  Point
                                       'tag_title'  Fly
                                             'bpm'  113.964
                                    'search_title'  'fly':1
                                   'search_artist'  'cornelius':1
                                  'search_release'  'point':1
                                     'search_rest'  '00asia':1 '2001':2,3 'asia':5 'japan':6,8,10 'jrock':11 'loc':4,7,9 'shibuyakei':12
                                    'search_combo'  '00asia':4 '2001':5,6 'asia':8 'cornelius':2B 'fly':1A 'japan':9,11,13 'jrock':14 'loc':7,10,12 'point':3C 'shibuyakei':15
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'shibuya kei', 'alternative', 'electronic', 'japanese']
                                        'tag_date'  2001
                                     'discogstags'  ['electronic', 'rock', 'pop', 'abstract', 'idm', 'experimental', 'indie rock']

============================== file details ==============================
                                           'mtime'  1637020041.163355  (2021-11-16 00:47:21)
                             'size'  10152143