======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '16'
                                          'artist'  'Dark Funeral'
                                     'text_people'  ''
                                         'release'  'The Secrets of the Black Arts'
                                           'title'  'The Dark Age Has Arrived'
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                                      'lastfmtags'  ("['swedish', 'swedish black metal', 'black metal', 'metal', 'melodic black "
 "metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '11'
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'eid-metal-black'
                                             'bpm'  '127.1'
                                             'key'  '7A'
                                        'acoustid'  '0590dad5-47bb-4a67-a812-e44ff8200067'
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'The Secrets of the Black Arts'
'TBPM' (BPM (beats per minute))                     '127.1'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-black'
'TDOR' (Original release time)                      '1996'
'TDRC' (Recording time)                             '2007-07-31'
'TIT2' (Title/songname/content description)         'The Dark Age Has Arrived'
'TKEY' (Initial key)                                '7A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Dark Funeral'
'TPE2' (Band/orchestra/accompaniment)               'Dark Funeral'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'Regain Records'
'TRCK' (Track number/Position in set)               '1/11'
'TSO2'                                              'Dark Funeral'
'TSOP' (Performer sort order)                       'Dark Funeral'
'TXXX:ASIN'                                         'B000R9YE2O'
'TXXX:Acoustid Id'                                  '0590dad5-47bb-4a67-a812-e44ff8200067'
'TXXX:CATALOGNUMBER'                                'REG-CD-1013'
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'TXXX:MusicBrainz Album Id'                         'eca3c7b7-086b-4698-bf69-b434c9c4b53e'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '7561ff6c-2ab7-4776-9a9a-662f23b2effc'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['swedish',
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 'black metal',
 'metal',
 'melodic black metal']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-4.58 dB'
'TXXX:replaygain_track_peak'                        '0.967842'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'53b681d3-06a7-444a-aad9-29c358b5e160')

========================== row from database ==========================
                                              'id'  1271770
                                            'path'  /data/Music/Bulk/00dwimp/Dark Funeral/The Secrets of the Black Arts/01-The Dark Age Has Arrived.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  16
                                           'genre'  eid-metal-black
                                        'filesize'  389656
                                           'mtime'  1620301874
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 01 eid metal black
                                      'tag_artist'  Dark Funeral
                                     'tag_release'  The Secrets of the Black Arts
                                       'tag_title'  The Dark Age Has Arrived
                                             'bpm'  127.1
                                    'search_title'  'age':3 'arrived':5 'dark':2 'has':4 'the':1
                                   'search_artist'  'dark':1 'funeral':2
                                  'search_release'  'arts':5 'black':4 'of':3 'secrets':2 'the':1
                                     'search_rest'  '00dwimp':1 'black':4 'eid':2 'metal':3
                                    'search_combo'  '00dwimp':13 'age':3A 'arrived':5A 'arts':12C 'black':11C,16 'dark':2A,6B 'eid':14 'funeral':7B 'has':4A 'metal':15 'of':10C 'secrets':9C 'the':1A,8C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['swedish', 'swedish black metal', 'black metal', 'metal', 'melodic black metal']
                                        'tag_date'  2007
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301874.0334246  (2021-05-06 13:51:14)
                             'size'  389656