======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '336'
                                          'artist'  'ムック'
                                     'text_people'  ''
                                         'release'  'tsuuzetsu ~inshou chigai~'
                                           'title'  'Itai Tegami'
                                           '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-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jrock', 'rock', 'visual kei', 'japanese', 'j rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-asia-japan;loc-asia-japan-jrock'
                                             'bpm'  '93.500'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 000015E6 000016FB 00007FC1'
'COMM:iTunNORM:eng'                                 (' 000015E6 000016FB 00007FC1 000083BE 0001FBFE 0001FBFE 00008000 00008000 '
 '0000C350 0000C367')
'TALB' (Album/Movie/Show title)                     'tsuuzetsu ~inshou chigai~'
'TBPM' (BPM (beats per minute))                     '93.500'
'TCON' (Content type, a.k.a. Genre)                 ['loc-asia-japan', 'loc-asia-japan-jrock']
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Itai Tegami'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mucc'
'TPE2' (Band/orchestra/accompaniment)               'ムック'
'TRCK' (Track number/Position in set)               '04'
'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'                                   ['jrock', 'rock', 'visual kei', 'japanese', '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'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.61 dB'
'TXXX:replaygain_track_peak'                        '0.410010'

========================== row from database ==========================
                                              'id'  925302
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Mucc/tsuuzetsu ~inshou chigai~/04 Itai Tegami.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  336
                                           'genre'  loc-asia-japan;loc-asia-japan-jrock
                                        'filesize'  5377920
                                           'mtime'  1637020224
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia Mucc 04 loc asia japan;loc asia japan jrock
                                      'tag_artist'  ムック
                                     'tag_release'  tsuuzetsu ~inshou chigai~
                                       'tag_title'  Itai Tegami
                                             'bpm'  93.5
                                    'search_title'  'itai':1 'tegami':2
                                   'search_artist'  'mutuku':2 'ムック':1
                                  'search_release'  'chigai':3 'inshou':2 'tsuuzetsu':1
                                     'search_rest'  '00asia':1 'asia':4 'japan':5,7,9 'jrock':10 'loc':3,6,8 'mucc':2
                                    'search_combo'  '00asia':8 'asia':11 'chigai':7C 'inshou':6C 'itai':1A 'japan':12,14,16 'jrock':17 'loc':10,13,15 'mucc':9 'mutuku':4B 'tegami':2A 'tsuuzetsu':5C 'ムック':3B
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jrock', 'rock', 'visual kei', 'japanese', 'j rock']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637020223.5876312  (2021-11-16 00:50:23)
                             'size'  5377920