======================== unified (from filesystem) ========================
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                                        'duration'  '227'
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                                      'lastfmtags'  ("['swedish', 'swedish black metal', 'black metal', 'metal', 'melodic black "
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                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '11'
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'eid-metal-black'
                                             'bpm'  '116.7'
                                             'key'  '10A'
                                        'acoustid'  'e7fac1ac-79af-4333-af60-ed4ef42f83cc'
rest: ''

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

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'TDOR' (Original release time)                      '1996'
'TDRC' (Recording time)                             '2007-07-31'
'TIT2' (Title/songname/content description)         'My Dark Desires'
'TKEY' (Initial key)                                '10A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Dark Funeral'
'TPE2' (Band/orchestra/accompaniment)               'Dark Funeral'
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'TPUB' (Publisher)                                  'Regain Records'
'TRCK' (Track number/Position in set)               '3/11'
'TSO2'                                              'Dark Funeral'
'TSOP' (Performer sort order)                       'Dark Funeral'
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'TXXX:MusicBrainz Album Type'                       'album'
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'TXXX:discogstags'                                  'rock'
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========================== row from database ==========================
                                              'id'  1269180
                                            'path'  /data/Music/Bulk/00dwimp/Dark Funeral/The Secrets of the Black Arts/03-My Dark Desires.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  227
                                           'genre'  eid-metal-black
                                        'filesize'  5466101
                                           'mtime'  1620301874
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 03 eid metal black
                                      'tag_artist'  Dark Funeral
                                     'tag_release'  The Secrets of the Black Arts
                                       'tag_title'  My Dark Desires
                                             'bpm'  116.7
                                    'search_title'  'dark':2 'desires':3 'my':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':11 'arts':10C 'black':9C,14 'dark':2A,4B 'desires':3A 'eid':12 'funeral':5B 'metal':13 'my':1A 'of':8C 'secrets':7C 'the':6C
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-1', 'q-bass-1', 'q-grit-4']
                                      'lastfmtags'  ['swedish', 'swedish black metal', 'black metal', 'metal', 'melodic black metal']
                                        'tag_date'  2007
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301874.1641006  (2021-05-06 13:51:14)
                             'size'  5466101