======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '219'
                                          'artist'  'RAG FAIR'
                                     'text_people'  ''
                                         'release'  'AIR'
                                           'title'  '空がきれい'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['a capella', 'a cappella', 'jpop', 'japanese', 'j pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '13'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;loc-asia-japan-jpop'
                                             'bpm'  '93'
                                             'key'  '10B'
                                        'acoustid'  '8c2cbb91-27f9-452c-b632-ab668b65bdb3'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'AIR'
'TBPM' (BPM (beats per minute))                     '93'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'loc-asia-japan-jpop']
'TDOR' (Original release time)                      '2003'
'TDRC' (Recording time)                             '2003-01-22'
'TIT2' (Title/songname/content description)         '空がきれい'
'TKEY' (Initial key)                                '10B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'RAG FAIR'
'TPE2' (Band/orchestra/accompaniment)               'RAG FAIR'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  "TOY'S FACTORY"
'TRCK' (Track number/Position in set)               '12/13'
'TSO2'                                              'RAG FAIR'
'TSOP' (Performer sort order)                       'RAG FAIR'
'TXXX:ASIN'                                         'B00007KL4B'
'TXXX:Acoustid Id'                                  '8c2cbb91-27f9-452c-b632-ab668b65bdb3'
'TXXX:Artists'                                      'RAG FAIR'
'TXXX:BARCODE'                                      '4988061861173'
'TXXX:CATALOGNUMBER'                                'TFCC-86117'
'TXXX:MusicBrainz Album Artist Id'                  'd176413b-2d5e-4fae-aba9-a70e4a5f0e4e'
'TXXX:MusicBrainz Album Id'                         '321ae434-a8d8-4b5d-be47-163afad72929'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'd176413b-2d5e-4fae-aba9-a70e4a5f0e4e'
'TXXX:MusicBrainz Release Group Id'                 '377e26e7-ba82-3ed0-91d9-9d19c0adf88c'
'TXXX:MusicBrainz Release Track Id'                 '728f3ca9-b90e-3786-9fd5-e18d34e6720b'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Jpan'
'TXXX:lastfmtags'                                   ['a capella', 'a cappella', 'jpop', 'japanese', 'j pop']
'TXXX:originalyear'                                 '2003'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.90 dB'
'TXXX:replaygain_track_peak'                        '0.505230'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'ad43c516-e3af-4609-ab76-72f931f1c585')

========================== row from database ==========================
                                              'id'  922906
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/AIR/12 Sora ga Kirei.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  219
                                           'genre'  loc-asia-japan;loc-asia-japan-jpop
                                        'filesize'  3561724
                                           'mtime'  1621629100
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia 12 Sora ga Kirei loc asia japan;loc asia japan jpop
                                      'tag_artist'  RAG FAIR
                                     'tag_release'  AIR
                                       'tag_title'  空がきれい
                                             'bpm'  93.0
                                    'search_title'  '空kakirei':2 '空がきれい':1
                                   'search_artist'  'fair':2 'rag':1
                                  'search_release'  'air':1
                                     'search_rest'  '00asia':1 'asia':6 'ga':3 'japan':7,9,11 'jpop':12 'kirei':4 'loc':5,8,10 'sora':2
                                    'search_combo'  '00asia':6 'air':5C 'asia':11 'fair':4B 'ga':8 'japan':12,14,16 'jpop':17 'kirei':9 'loc':10,13,15 'rag':3B 'sora':7 '空kakirei':2A '空がきれい':1A
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['a capella', 'a cappella', 'jpop', 'japanese', 'j pop']
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629100.3666503  (2021-05-21 22:31:40)
                             'size'  3561724