======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '178'
                                          'artist'  'Hiromi Go'
                                     'text_people'  ''
                                         'release'  "青春歌年鑑 '80 BEST30"
                                           'title'  'How many いい顔'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['japanese', 'j-pop', 'pop', 'johnnys entertainment', 'jpop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '15'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan'
                                             'bpm'  '113.326'
                                             'key'  '6A'
                                        'acoustid'  '785faba6-cb23-4266-b7e6-3a1080272527'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     "青春歌年鑑 '80 BEST30"
'TBPM' (BPM (beats per minute))                     '113.326'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-japan'
'TDOR' (Original release time)                      '2000'
'TDRC' (Recording time)                             '2000-11-22'
'TIT2' (Title/songname/content description)         'How many いい顔'
'TKEY' (Initial key)                                '6A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Hiromi Go'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2/2'
'TPUB' (Publisher)                                  'Sony Records'
'TRCK' (Track number/Position in set)               '7/15'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Go, Hiromi'
'TSRC' (ISRC (international standard recording code))  'JPSR08009260'
'TXXX:ASIN'                                         'B00005HP8G'
'TXXX:Acoustid Id'                                  '785faba6-cb23-4266-b7e6-3a1080272527'
'TXXX:Artists'                                      'Hiromi Go'
'TXXX:BARCODE'                                      '4988009491097'
'TXXX:CATALOGNUMBER'                                'SRCL-4910/SRCL-4911'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         'a88e620d-1059-4106-80e9-8e970905c093'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'a5e9afe4-a554-4ac1-a025-3fa269c5a7fc'
'TXXX:MusicBrainz Release Group Id'                 '1b3f74db-03a6-364d-8129-2cc49b9a1b03'
'TXXX:MusicBrainz Release Track Id'                 'd054432f-a891-3b1f-923b-a9096b8544d4'
'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:SCRIPT'                                       'Jpan'
'TXXX:lastfmtags'                                   ['japanese', 'j-pop', 'pop', 'johnnys entertainment', 'jpop']
'TXXX:originalyear'                                 '2000'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-7.50 dB'
'TXXX:replaygain_track_peak'                        '1.005205'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'a77a185f-e8ae-467e-a971-2aec8cf0cff1')

========================== row from database ==========================
                                              'id'  1397728
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Enka and Kayoukyoku/青春歌年鑑８0 - Disc 2/07_郷ひろみ_How many いい顔.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  178
                                           'genre'  loc-asia-japan
                                        'filesize'  7427642
                                           'mtime'  1622821671
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia Enka and Kayoukyoku 青春歌年鑑８0 Disc 2 07_郷ひろみ_How loc asia japan
                                      'tag_artist'  Hiromi Go
                                     'tag_release'  青春歌年鑑 '80 BEST30
                                       'tag_title'  How many いい顔
                                             'bpm'  113.326
                                    'search_title'  'how':1 'ii顔':4 'many':2 'いい顔':3
                                   'search_artist'  'go':2 'hiromi':1
                                  'search_release'  '80':2,3 'best30':4 '青春歌年鑑':1
                                     'search_rest'  '00asia':1 '07':9,12 '2':8 'and':3 'asia':16 'disc':7 'enka':2 'how':11,14 'japan':17 'kayoukyoku':4 'loc':15 '郷hiromi':13 '郷ひろみ':10 '青春歌年鑑80':6 '青春歌年鑑８0':5
                                    'search_combo'  '00asia':11 '07':19,22 '2':18 '80':8C,9C 'and':13 'asia':26 'best30':10C 'disc':17 'enka':12 'go':6B 'hiromi':5B 'how':1A,21,24 'ii顔':4A 'japan':27 'kayoukyoku':14 'loc':25 'many':2A 'いい顔':3A '郷hiromi':23 '郷ひろみ':20 '青春歌年鑑':7C '青春歌年鑑80':16 '青春歌年鑑８0':15
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['japanese', 'j-pop', 'pop', 'johnnys entertainment', 'jpop']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622821670.7910812  (2021-06-04 17:47:50)
                             'size'  7427642