======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '294'
                                          'artist'  'ウルフルズ'
                                     'text_people'  ''
                                         'release'  'You'
                                           'title'  '39(サンキュー)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['ulfuls', 'rock', 'japanese', 'j pop', 'j rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  '12'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;loc-asia-japan-jpop'
                                             'bpm'  '105.313'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         '39(San Kyuu) (39(thank you)) - [Ulfuls]'
'COMM:ID3v1 Comment:XXX'                            '39(San Kyuu) (39(thank you))'
'COMM:iTunNORM:eng'                                 (' 0000040D 000003F0 000013A5 00001551 0000C37E 0000C37E 0000655D 0000627C '
 '0001FBE7 0001FBE7')
'TALB' (Album/Movie/Show title)                     'You'
'TBPM' (BPM (beats per minute))                     '105.313'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'loc-asia-japan-jpop']
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         '39(サンキュー)'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ulfuls'
'TPE2' (Band/orchestra/accompaniment)               'ウルフルズ'
'TRCK' (Track number/Position in set)               '04/12'
'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:lastfmtags'                                   ['ulfuls', 'rock', 'japanese', 'j pop', 'j rock']
'TXXX:other'                                        '2006'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.58 dB'
'TXXX:replaygain_track_peak'                        '0.493461'

========================== row from database ==========================
                                              'id'  922922
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Ulfuls/[2006] You/04 39(サンキュー).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  294
                                           'genre'  loc-asia-japan;loc-asia-japan-jpop
                                        'filesize'  7437484
                                           'mtime'  1622821867
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia Ulfuls [2006] 04 loc asia japan;loc asia japan jpop
                                      'tag_artist'  ウルフルズ
                                     'tag_release'  You
                                       'tag_title'  39(サンキュー)
                                             'bpm'  105.313
                                    'search_title'  '39':1,4 '39sankiyu':6 '39サンキュー':3 'sankiyu':5 'サンキュー':2
                                   'search_artist'  'uruhurusu':2 'ウルフルズ':1
                                  'search_release'  'you':1
                                     'search_rest'  '00asia':1 '2006':3,4 'asia':6 'japan':7,9,11 'jpop':12 'loc':5,8,10 'ulfuls':2
                                    'search_combo'  '00asia':10 '2006':12,13 '39':1A,4A '39sankiyu':6A '39サンキュー':3A 'asia':15 'japan':16,18,20 'jpop':21 'loc':14,17,19 'sankiyu':5A 'ulfuls':11 'uruhurusu':8B 'you':9C 'ウルフルズ':7B 'サンキュー':2A
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['ulfuls', 'rock', 'japanese', 'j pop', 'j rock']
                                        'tag_date'  2006
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622821867.2139754  (2021-06-04 17:51:07)
                             'size'  7437484