======================== unified (from filesystem) ========================
                                         'bitrate'  '206.143'
                                        'duration'  '199'
                                          'artist'  'Sister Machine Gun'
                                     'text_people'  ''
                                         'release'  '[R]evolution'
                                           'title'  'Carbon Copy'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  ("['industrial metal', 'industrial', 'electro industrial', 'ebm', 'industrial "
 "rock', 'electronic']")
                                     'discogstags'  "['industrial', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'eid-ebm or industrial or darkwave-industrial'
                                             'bpm'  '140.238'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[R]evolution'
'TBPM' (BPM (beats per minute))                     '140.238'
'TCON' (Content type, a.k.a. Genre)                 'eid-ebm or industrial or darkwave-industrial'
'TDRC' (Recording time)                             '1999'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Carbon Copy'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sister Machine Gun'
'TRCK' (Track number/Position in set)               '02'
'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'                                  ['industrial', 'electronic']
'TXXX:lastfmtags'                                   ['industrial metal',
 'industrial',
 'electro industrial',
 'ebm',
 'industrial rock',
 'electronic']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.02 dB'
'TXXX:replaygain_track_peak'                        '0.457300'

========================== row from database ==========================
                                              'id'  1394599
                                            'path'  /data/Music/Bulk/00dwimp/00ebm-industrial-darkwave-goth/Sister Machine Gun/[R]evolution/02 - Carbon Copy.mp3
                                         'working'  None
                                         'bitrate'  206
                                    'duration_sec'  199
                                           'genre'  eid-ebm or industrial or darkwave-industrial
                                        'filesize'  5141951
                                           'mtime'  1620298076
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00ebm industrial darkwave goth 02 eid ebm or industrial or darkwave industrial
                                      'tag_artist'  Sister Machine Gun
                                     'tag_release'  [R]evolution
                                       'tag_title'  Carbon Copy
                                             'bpm'  140.238
                                    'search_title'  'carbon':1 'copy':2
                                   'search_artist'  'gun':3 'machine':2 'sister':1
                                  'search_release'  'evolution':2 'r':1 'revolution':3
                                     'search_rest'  '00dwimp':1 '00ebm':2 'darkwave':4 'ebm':7 'eid':6 'goth':5 'industrial':3 'or':8
                                    'search_combo'  '00dwimp':9 '00ebm':10 'carbon':1A 'copy':2A 'darkwave':12 'ebm':15 'eid':14 'evolution':7C 'goth':13 'gun':5B 'industrial':11 'machine':4B 'or':16 'r':6C 'revolution':8C 'sister':3B
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-1', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['industrial metal', 'industrial', 'electro industrial', 'ebm', 'industrial rock', 'electronic']
                                        'tag_date'  1999
                                     'discogstags'  ['industrial', 'electronic']

============================== file details ==============================
                                           'mtime'  1620298076.04762  (2021-05-06 12:47:56)
                             'size'  5141951