======================== unified (from filesystem) ========================
                                         'bitrate'  '217.931'
                                        'duration'  '261'
                                          'artist'  'The Doors'
                                     'text_people'  ''
                                         'release'  'L.A. Woman'
                                           'title'  'The Changeling'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock', 'psychedelic rock', '60s', 'psychedelic', 'classic rock']"
                                     'discogstags'  "['rock', 'blues', 'alternative rock', 'blues rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '117.398'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 000001F9 000001AF 00001445'
'COMM:iTunNORM:eng'                                 (' 000001F9 000001AF 00001445 00000DDC 00017E8B 00017E8B 00002DED 00002E25 '
 '000378B7 00017E8B')
'TALB' (Album/Movie/Show title)                     'L.A. Woman'
'TBPM' (BPM (beats per minute))                     '117.398'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '1971'
'TDRC' (Recording time)                             '1971'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'The Changeling'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Doors'
'TRCK' (Track number/Position in set)               '1'
'TXXX:MusicBrainz Album Id'                         'e68f23df-61e3-4264-bfc3-17ac3a6f856b'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '9efff43b-3b29-4082-824e-bc82f646f93d'
'TXXX:MusicBrainz TRM Id'                           '99feebbd-3068-446e-ab50-91e2c5bc7218'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'blues', 'alternative rock', 'blues rock']
'TXXX:lastfmtags'                                   ['rock', 'psychedelic rock', '60s', 'psychedelic', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'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'                        '+1.45 dB'
'TXXX:replaygain_track_peak'                        '0.392093'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'613a67bc-9746-49a5-af84-33eeb23a1f59')

========================== row from database ==========================
                                              'id'  1416388
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/The Doors/L.A. Woman/01 The Changeling.mp3
                                         'working'  None
                                         'bitrate'  217
                                    'duration_sec'  261
                                           'genre'  rock-cppex-classic
                                        'filesize'  7136471
                                           'mtime'  1636038913
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 01 rock cppex classic
                                      'tag_artist'  The Doors
                                     'tag_release'  L.A. Woman
                                       'tag_title'  The Changeling
                                             'bpm'  117.398
                                    'search_title'  'changeling':2 'the':1
                                   'search_artist'  'doors':2 'the':1
                                  'search_release'  'a':2 'l':1 'la':3 'woman':4
                                     'search_rest'  'classic':4 'classicprogpsy':1 'cppex':3 'rock':2
                                    'search_combo'  'a':6C 'changeling':2A 'classic':12 'classicprogpsy':9 'cppex':11 'doors':4B 'l':5C 'la':7C 'rock':10 'the':1A,3B 'woman':8C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'psychedelic rock', '60s', 'psychedelic', 'classic rock']
                                        'tag_date'  1971
                                     'discogstags'  ['rock', 'blues', 'alternative rock', 'blues rock']

============================== file details ==============================
                                           'mtime'  1636038913.1217775  (2021-11-04 16:15:13)
                             'size'  7136471