======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '164'
                                          'artist'  'Esther Walker'
                                     'text_people'  ''
                                         'release'  'Victor 18657 (23480-3)'
                                           'title'  "How Sorry You'll Be"
                                           'quals'  ("['Q-JZFKS-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-1', "
 "'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', '30s', '20s', 'blues', 'all']"
                                     'discogstags'  "['pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1919'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '141.019'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Victor 18657 (23480-3)'
'TBPM' (BPM (beats per minute))                     '141.019'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1919'
'TIT2' (Title/songname/content description)         "How Sorry You'll Be"
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Esther Walker'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'pop'
'TXXX:lastfmtags'                                   ['jazz', '30s', '20s', 'blues', 'all']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.90 dB'
'TXXX:replaygain_track_peak'                        '0.471542'

========================== row from database ==========================
                                              'id'  1511465
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1919/Esther Walker - How Sorry You_ll Be 18-11-1919.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  164
                                           'genre'  prerock-unsorted
                                        'filesize'  3299122
                                           'mtime'  1620385123
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1919 You_ll 11 1919 prerock unsorted
                                      'tag_artist'  Esther Walker
                                     'tag_release'  Victor 18657 (23480-3)
                                       'tag_title'  How Sorry You'll Be
                                             'bpm'  141.019
                                    'search_title'  'be':6 'how':1 'll':4 'sorry':2 'you':3 'youll':5
                                   'search_artist'  'esther':1 'walker':2
                                  'search_release'  '18657':2 '23480':3 '234803':5 '3':4 'victor':1
                                     'search_rest'  '00oldiepop':5 '1919':6 'country':4 'exotica':2 'jazz':1 'll':8 'oldies':3 'prerock':9 'unsorted':10 'you':7
                                    'search_combo'  '00oldiepop':18 '18657':10C '1919':19 '23480':11C '234803':13C '3':12C 'be':6A 'country':17 'esther':7B 'exotica':15 'how':1A 'jazz':14 'll':4A,21 'oldies':16 'prerock':22 'sorry':2A 'unsorted':23 'victor':9C 'walker':8B 'you':3A,20 'youll':5A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['jazz', '30s', '20s', 'blues', 'all']
                                        'tag_date'  1919
                                     'discogstags'  ['pop']

============================== file details ==============================
                                           'mtime'  1620385123.3759305  (2021-05-07 12:58:43)
                             'size'  3299122