======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '265'
                                          'artist'  'Yasuaki Shimizu (清水靖晃)'
                                     'text_people'  ''
                                         'release'  'Far East Express'
                                           'title'  'Ain\'t Nothing But "G"'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-2', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '9'
                                            'date'  '1979'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '112.196'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 0000052F 000004E5 00003D55'
'COMM:iTunNORM:eng'                                 (' 0000052F 000004E5 00003D55 00003D9D 000216E0 000216E0 00007C62 00007F01 '
 '00038D06 00038D06')
'TALB' (Album/Movie/Show title)                     'Far East Express'
'TBPM' (BPM (beats per minute))                     '112.196'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1979'
'TENC' (Encoded by)                                 'Sound Grinder 3.3.5'
'TIT2' (Title/songname/content description)         'Ain\'t Nothing But "G"'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Yasuaki Shimizu'
'TPE2' (Band/orchestra/accompaniment)               'Yasuaki Shimizu (清水靖晃)'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '2/9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.36 dB'
'TXXX:replaygain_track_peak'                        '0.701610'

========================== row from database ==========================
                                              'id'  1500199
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Yasuaki Shimizu - Far East Express/02 Ain_t Nothing But _G_.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  265
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  10778188
                                           'mtime'  1620540405
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia 02 Ain_t _G_ prerock jb jazz unsorted
                                      'tag_artist'  Yasuaki Shimizu (清水靖晃)
                                     'tag_release'  Far East Express
                                       'tag_title'  Ain't Nothing But "G"
                                             'bpm'  112.196
                                    'search_title'  'ain':1 'aint':3 'but':5 'g':6 'nothing':4 't':2
                                   'search_artist'  'shimizu':2 'yasuaki':1 '清水靖晃':3,4
                                  'search_release'  'east':2 'express':3 'far':1
                                     'search_rest'  '00asia':1 'ain':2 'g':4 'jazz':7 'jb':6 'prerock':5 't':3 'unsorted':8
                                    'search_combo'  '00asia':14 'ain':1A,15 'aint':3A 'but':5A 'east':12C 'express':13C 'far':11C 'g':6A,17 'jazz':20 'jb':19 'nothing':4A 'prerock':18 'shimizu':8B 't':2A,16 'unsorted':21 'yasuaki':7B '清水靖晃':9B,10B
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1979
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620540404.82442  (2021-05-09 08:06:44)
                             'size'  10778188