======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '253'
                                          'artist'  'Penicillin'
                                     'text_people'  ''
                                         'release'  'Kakkaku'
                                           'title'  'Ai no Sekai'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jrock', 'visual kei', 'japanese', 'rock', 'j rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;rock-pop-jrock;loc-asia-japan-jrock'
                                             'bpm'  '115.987'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00002E8F 00001F64 000088EF 000064BE 0002E675 00033467 00008000 00008000 '
 '0000C37E 000222E0')
'TALB' (Album/Movie/Show title)                     'Kakkaku'
'TBPM' (BPM (beats per minute))                     '115.987'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'rock-pop-jrock', 'loc-asia-japan-jrock']
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Ai no Sekai'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Penicillin'
'TRCK' (Track number/Position in set)               '5'
'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:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['jrock', 'visual kei', 'japanese', 'rock', 'j rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.57 dB'
'TXXX:replaygain_track_peak'                        '0.341120'

========================== row from database ==========================
                                              'id'  315755
                                            'path'  /data/Music/Bulk/00dwimp/Penicillin - (2003.10.01) (album) Kakkaku/05 - Ai No Sekai.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  253
                                           'genre'  loc-asia-japan;rock-pop-jrock;loc-asia-japan-jrock
                                        'filesize'  6074240
                                           'mtime'  1621701941
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp (2003.10.01) (album) 05 No loc asia japan;rock pop jrock;loc asia japan jrock
                                      'tag_artist'  Penicillin
                                     'tag_release'  Kakkaku
                                       'tag_title'  Ai no Sekai
                                             'bpm'  115.987
                                    'search_title'  'ai':1 'no':2 'sekai':3
                                   'search_artist'  'penicillin':1
                                  'search_release'  'kakkaku':1
                                     'search_rest'  '00dwimp':1 '01':4 '10':3 '2003':2 '20031001':5 'album':6,7 'asia':10 'japan':11,13,20 'jrock':16,18,21 'loc':9,17,19 'no':8 'pop':15 'rock':12,14
                                    'search_combo'  '00dwimp':6 '01':9 '10':8 '2003':7 '20031001':10 'ai':1A 'album':11,12 'asia':15 'japan':16,18,25 'jrock':21,23,26 'kakkaku':5C 'loc':14,22,24 'no':2A,13 'penicillin':4B 'pop':20 'rock':17,19 'sekai':3A
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jrock', 'visual kei', 'japanese', 'rock', 'j rock']
                                        'tag_date'  2003
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621701941.1083283  (2021-05-22 18:45:41)
                             'size'  6074240