======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '554'
                                          'artist'  'Neurosis'
                                     'text_people'  'D.Edwardson/J.Roeder/N.Landis/S.Kelly/S.Von Till'
                                         'release'  'Times Of Grace'
                                           'title'  "The Last You'll Know"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['sludge', 'doom metal', 'post metal', 'experimental', 'progressive metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '11'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'eid-metal-sludge or grind'
                                             'bpm'  '141.6'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00000C6D 00000B9A 00003B8F 000037A5 00077DDB 00008BCB 00008553 00008820 '
 '0000BCAC 00007FC1')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000008DC 0000000001750494 00000000 01523FD6 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '11+F15B1388E0BAA34431BCD86FF88D0534+3931093'
'TALB' (Album/Movie/Show title)                     'Times Of Grace'
'TBPM' (BPM (beats per minute))                     '141.6'
'TCOM' (Composer)                                   'D.Edwardson/J.Roeder/N.Landis/S.Kelly/S.Von Till'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-sludge or grind'
'TDRC' (Recording time)                             '1999'
'TENC' (Encoded by)                                 'iTunes v7.0.0.70'
'TIT2' (Title/songname/content description)         "The Last You'll Know"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Neurosis'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '4/11'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['sludge', 'doom metal', 'post metal', 'experimental', 'progressive metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.05 dB'
'TXXX:replaygain_track_peak'                        '0.532882'

========================== row from database ==========================
                                              'id'  1498605
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Neurosis/Times Of Grace/04 The Last You_ll Know.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  554
                                           'genre'  eid-metal-sludge or grind
                                        'filesize'  22178142
                                           'mtime'  1620310867
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 04 You_ll eid metal sludge or grind
                                      'tag_artist'  Neurosis
                                     'tag_release'  Times Of Grace
                                       'tag_title'  The Last You'll Know
                                             'bpm'  141.6
                                    'search_title'  'know':6 'last':2 'll':4 'the':1 'you':3 'youll':5
                                   'search_artist'  'neurosis':1
                                  'search_release'  'grace':3 'of':2 'times':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':5 'grind':9 'll':4 'metal':6 'or':8 'sludge':7 'you':3
                                    'search_combo'  '00dwimp':11 '00metal':12 'eid':15 'grace':10C 'grind':19 'know':6A 'last':2A 'll':4A,14 'metal':16 'neurosis':7B 'of':9C 'or':18 'sludge':17 'the':1A 'times':8C 'you':3A,13 'youll':5A
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['sludge', 'doom metal', 'post metal', 'experimental', 'progressive metal']
                                        'tag_date'  1999
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620310867.3323288  (2021-05-06 16:21:07)
                             'size'  22178142