======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '277'
                                          'artist'  'Shuuji to Akira'
                                     'text_people'  ''
                                         'release'  'Seishun Amigo'
                                           'title'  'Seishun Amigo'
                                           'quals'  ("['Q-HAP-2', '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-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['j-pop', 'japanese', 'johnnys entertainment', 'male vocalists', 'jpop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;loc-asia-japan-jpop'
                                             'bpm'  '89.178'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 00001788 00001664 00004DC7'
'COMM:iTunNORM:eng'                                 (' 00001788 00001664 00004DC7 0000430B 00038287 00033467 00007EF4 00008000 '
 '00029855 00029827')
'TALB' (Album/Movie/Show title)                     'Seishun Amigo'
'TBPM' (BPM (beats per minute))                     '89.178'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'loc-asia-japan-jpop']
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Seishun Amigo'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Shuuji to Akira'
'TRCK' (Track number/Position in set)               '1'
'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:lastfmtags'                                   ['j-pop', 'japanese', 'johnnys entertainment', 'male vocalists', 'jpop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.76 dB'
'TXXX:replaygain_track_peak'                        '0.377482'

========================== row from database ==========================
                                              'id'  392087
                                            'path'  /data/Music/Bulk/00localcharacter/Shuuji to Akira/Seishun Amigo/01 Seishun Amigo.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  277
                                           'genre'  loc-asia-japan;loc-asia-japan-jpop
                                        'filesize'  6651725
                                           'mtime'  1637330178
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 01 loc asia japan;loc asia japan jpop
                                      'tag_artist'  Shuuji to Akira
                                     'tag_release'  Seishun Amigo
                                       'tag_title'  Seishun Amigo
                                             'bpm'  89.178
                                    'search_title'  'amigo':2 'seishun':1
                                   'search_artist'  'akira':3 'shuuji':1 'to':2
                                  'search_release'  'amigo':2 'seishun':1
                                     'search_rest'  'asia':2 'japan':3,5,7 'jpop':8 'loc':1,4,6
                                    'search_combo'  'akira':5B 'amigo':2A,7C 'asia':9 'japan':10,12,14 'jpop':15 'loc':8,11,13 'seishun':1A,6C 'shuuji':3B 'to':4B
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  3A
                                           '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-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['j-pop', 'japanese', 'johnnys entertainment', 'male vocalists', 'jpop']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637330178.365757  (2021-11-19 14:56:18)
                             'size'  6651725