======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '209'
                                          'artist'  'Flanders and Swann'
                                     'text_people'  ''
                                         'release'  'The Bestiary of Flanders and S'
                                           'title'  'The Whale'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-2', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'Q-PIANO-3', 'q-chart-2', 'q-drums-1', 'q-other-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['english', 'comedy', 'british', 'humour', 'word play']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1964'
                                        'comments'  ''
                                           'genre'  'entertaining-comedians'
                                             'bpm'  '142.008'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 0000018C 000000DD 0000414E'
'TALB' (Album/Movie/Show title)                     'The Bestiary of Flanders and S'
'TBPM' (BPM (beats per minute))                     '142.008'
'TCON' (Content type, a.k.a. Genre)                 'entertaining-comedians'
'TDRC' (Recording time)                             '1964'
'TIT2' (Title/songname/content description)         'The Whale'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Flanders and Swann'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['english', 'comedy', 'british', 'humour', 'word play']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.18 dB'
'TXXX:replaygain_track_peak'                        '0.850309'

========================== row from database ==========================
                                              'id'  1299423
                                            'path'  /data/Music/Bulk/00spent/Flanders & Swann/The Bestiary (& Extiary) Of Flanders And/3-04 The Whale.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  209
                                           'genre'  entertaining-comedians
                                        'filesize'  5038788
                                           'mtime'  1620647275
                                   'redo_metaread'  0
                                        'rest_str'   00spent & (& Extiary) Of And 3 04 entertaining comedians
                                      'tag_artist'  Flanders and Swann
                                     'tag_release'  The Bestiary of Flanders and S
                                       'tag_title'  The Whale
                                             'bpm'  142.008
                                    'search_title'  'the':1 'whale':2
                                   'search_artist'  'and':2 'flanders':1 'swann':3
                                  'search_release'  'and':5 'bestiary':2 'flanders':4 'of':3 's':6 'the':1
                                     'search_rest'  '00spent':1 '3':6 'and':5 'comedians':8 'entertaining':7 'extiary':2,3 'of':4
                                    'search_combo'  '00spent':12 '3':17 'and':4B,10C,16 'bestiary':7C 'comedians':19 'entertaining':18 'extiary':13,14 'flanders':3B,9C 'of':8C,15 's':11C 'swann':5B 'the':1A,6C 'whale':2A
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['english', 'comedy', 'british', 'humour', 'word play']
                                        'tag_date'  1964
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620647275.450508  (2021-05-10 13:47:55)
                             'size'  5038788