======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '215'
                                          'artist'  'downy'
                                     'text_people'  ''
                                         'release'  '無題'
                                           'title'  '葵'
                                           'quals'  ("['Q-HAP-2', '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-1', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative', 'indie', 'shoegaze', 'post rock', 'japanese']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '8'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;loc-asia-japan-jrock;set-pl-sced'
                                             'bpm'  '138.987'
                                             'key'  '3A'
                                        'acoustid'  'd4dfe6b7-f94a-4a41-afc2-ae3e3dc9060b'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00003DC1 000029D4 00009405'
'COMM:iTunNORM:eng'                                 (' 00003DC1 000029D4 00009405 00006E6F 00024A1E 00024A35 00008000 00008000 '
 '000138C5 00002710')
'TALB' (Album/Movie/Show title)                     '無題'
'TBPM' (BPM (beats per minute))                     '138.987'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'loc-asia-japan-jrock', 'set-pl-sced']
'TDOR' (Original release time)                      '2002'
'TDRC' (Recording time)                             '2002-05-22'
'TIT2' (Title/songname/content description)         '葵'
'TKEY' (Initial key)                                '3A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'downy'
'TPE2' (Band/orchestra/accompaniment)               'downy'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'felicity'
'TRCK' (Track number/Position in set)               '1/8'
'TSO2'                                              'downy'
'TSOP' (Performer sort order)                       'downy'
'TXXX:ASIN'                                         'B0000641LQ'
'TXXX:Acoustid Id'                                  'd4dfe6b7-f94a-4a41-afc2-ae3e3dc9060b'
'TXXX:Artists'                                      'downy'
'TXXX:BARCODE'                                      '4540957001683'
'TXXX:CATALOGNUMBER'                                'MTCD-1009'
'TXXX:MusicBrainz Album Artist Id'                  'f2bec217-8b84-42d4-9395-1421f1fa8a51'
'TXXX:MusicBrainz Album Id'                         'a4d68058-cf6d-4ace-ba83-5132e95ca2ae'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'f2bec217-8b84-42d4-9395-1421f1fa8a51'
'TXXX:MusicBrainz Release Group Id'                 '22d06d19-5dc1-32ff-af77-fd3d82ef153e'
'TXXX:MusicBrainz Release Track Id'                 'a545dad2-87fc-3f34-a8a9-5093f74d045e'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Jpan'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['alternative', 'indie', 'shoegaze', 'post rock', 'japanese']
'TXXX:originalyear'                                 '2002'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.24 dB'
'TXXX:replaygain_track_peak'                        '0.292739'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'b540b38d-5b77-4c06-9c78-64c50029b652')

========================== row from database ==========================
                                              'id'  450291
                                            'path'  /data/Music/Bulk/00localcharacter/downy/[2002] 無題/01 葵.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  215
                                           'genre'  loc-asia-japan;loc-asia-japan-jrock;set-pl-sced
                                        'filesize'  5184279
                                           'mtime'  1637020081
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter [2002] 01 loc asia japan;loc asia japan jrock;set pl sced
                                      'tag_artist'  downy
                                     'tag_release'  無題
                                       'tag_title'  葵
                                             'bpm'  138.987
                                    'search_title'  '葵':1
                                   'search_artist'  'downy':1
                                  'search_release'  '無題':1
                                     'search_rest'  '2002':1,2 'asia':4 'japan':5,7,9 'jrock':10,12 'loc':3,6,8 'pl':14 'sced':15 'set':11,13
                                    'search_combo'  '2002':4,5 'asia':7 'downy':2B 'japan':8,10,12 'jrock':13,15 'loc':6,9,11 'pl':17 'sced':18 'set':14,16 '無題':3C '葵':1A
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative', 'indie', 'shoegaze', 'post rock', 'japanese']
                                        'tag_date'  2002
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1637020081.4103293  (2021-11-16 00:48:01)
                             'size'  5184279