======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '258'
                                          'artist'  'The Doors'
                                     'text_people'  ''
                                         'release'  'Apocalypse Now'
                                           'title'  'Back Door Man'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
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                                      'lastfmtags'  "['rock', 'psychedelic rock', '60s', 'psychedelic', 'classic rock']"
                                     'discogstags'  "['rock', 'psychedelic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '12'
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '96.9'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 00000349 0000019E 00000F00'
'COMM:iTunNORM:eng'                                 (' 00000349 0000019E 00000F00 0000081B 0003347E 0001ADC7 00002820 000029B2 '
 '0003A997 00015FA7')
'TALB' (Album/Movie/Show title)                     'Apocalypse Now'
'TBPM' (BPM (beats per minute))                     '96.9'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '1994'
'TDRC' (Recording time)                             '1994'
'TIT2' (Title/songname/content description)         'Back Door Man'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '256666'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Doors'
'TPE2' (Band/orchestra/accompaniment)               'The Doors'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Kiss the Stone'
'TRCK' (Track number/Position in set)               '3/12'
'TSO2'                                              'Doors, The'
'TSOP' (Performer sort order)                       'Doors, The'
'TXXX:Artists'                                      'The Doors'
'TXXX:BARCODE'                                      '8013780012677'
'TXXX:CATALOGNUMBER'                                'KTS 267'
'TXXX:GN_DiscArtist'                                'The Doors'
'TXXX:MusicBrainz Album Artist Id'                  '9efff43b-3b29-4082-824e-bc82f646f93d'
'TXXX:MusicBrainz Album Id'                         'cdaf7215-378f-4e10-af3d-02f2143b8f14'
'TXXX:MusicBrainz Album Release Country'            'IT'
'TXXX:MusicBrainz Album Status'                     'bootleg'
'TXXX:MusicBrainz Album Type'                       'album/live'
'TXXX:MusicBrainz Artist Id'                        '9efff43b-3b29-4082-824e-bc82f646f93d'
'TXXX:MusicBrainz Release Group Id'                 'aa225bcf-f1b7-330e-890f-f51b31acb749'
'TXXX:MusicBrainz Release Track Id'                 'fb749d84-1ba7-39c6-b6b3-e54e77524dba'
'TXXX:MusicBrainz TRM Id'                           '3d6cc78b-f46f-499a-9899-8fac3248fefe'
'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:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'psychedelic rock']
'TXXX:lastfmtags'                                   ['rock', 'psychedelic rock', '60s', 'psychedelic', 'classic rock']
'TXXX:originalyear'                                 '1994'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.30 dB'
'TXXX:replaygain_track_peak'                        '0.416719'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'abd2f5f7-2199-4c7d-8c1b-5f6c2eb3e6e0')
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========================== row from database ==========================
                                              'id'  1415241
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/The Doors/Apocalypse Now/03 Back Door Man.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  258
                                           'genre'  rock-cppex-classic
                                        'filesize'  6216818
                                           'mtime'  1636038913
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 03 rock cppex classic
                                      'tag_artist'  The Doors
                                     'tag_release'  Apocalypse Now
                                       'tag_title'  Back Door Man
                                             'bpm'  96.9
                                    'search_title'  'back':1 'door':2 'man':3
                                   'search_artist'  'doors':2 'the':1
                                  'search_release'  'apocalypse':1 'now':2
                                     'search_rest'  'classic':4 'classicprogpsy':1 'cppex':3 'rock':2
                                    'search_combo'  'apocalypse':6C 'back':1A 'classic':11 'classicprogpsy':8 'cppex':10 'door':2A 'doors':5B 'man':3A 'now':7C 'rock':9 'the':4B
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'psychedelic rock', '60s', 'psychedelic', 'classic rock']
                                        'tag_date'  1994
                                     'discogstags'  ['rock', 'psychedelic rock']

============================== file details ==============================
                                           'mtime'  1636038912.9256053  (2021-11-04 16:15:12)
                             'size'  6216818