======================== unified (from filesystem) ========================
                                         'bitrate'  '207.651'
                                        'duration'  '271'
                                          'artist'  'Nifelheim'
                                     'text_people'  ''
                                         'release'  'Envoy of Lucifer'
                                           'title'  'Open the Gates of Damnation'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['thrash metal', 'blackened thrash metal', 'swedish', 'black metal', 'black "
 "thrash metal']")
                                     'discogstags'  "['black metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '10'
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'eid-metal-black'
                                             'bpm'  '141.3'
                                             'key'  '1A'
                                        'acoustid'  'b3574800-8cd0-4e01-990c-b9405c6c50a0'
rest: ''

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

'COMM:ID3v1 Comment:eng'                            'xxx'
'TALB' (Album/Movie/Show title)                     'Envoy of Lucifer'
'TBPM' (BPM (beats per minute))                     '141.3'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-black'
'TDOR' (Original release time)                      '2007'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'Open the Gates of Damnation'
'TKEY' (Initial key)                                '1A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Nifelheim'
'TPE2' (Band/orchestra/accompaniment)               'Nifelheim'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'СД-Максимум'
'TRCK' (Track number/Position in set)               '3/10'
'TSO2'                                              'Nifelheim'
'TSOP' (Performer sort order)                       'Nifelheim'
'TXXX:Acoustid Id'                                  'b3574800-8cd0-4e01-990c-b9405c6c50a0'
'TXXX:CATALOGNUMBER'                                'CDM 0208-2818'
'TXXX:MusicBrainz Album Artist Id'                  '51f5f29e-ffc2-4c99-927b-f80259d32a04'
'TXXX:MusicBrainz Album Id'                         '16779ade-be4e-3f61-b777-db62fa894c71'
'TXXX:MusicBrainz Album Release Country'            'RU'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '51f5f29e-ffc2-4c99-927b-f80259d32a04'
'TXXX:Q-HAP'                                        '1'
'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'                                  ['black metal', 'rock']
'TXXX:lastfmtags'                                   ['thrash metal',
 'blackened thrash metal',
 'swedish',
 'black metal',
 'black thrash metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.26 dB'
'TXXX:replaygain_track_peak'                        '0.349489'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'f958522c-2223-4f82-9213-be8415cc5c19')

========================== row from database ==========================
                                              'id'  1394530
                                            'path'  /data/Music/Bulk/00dwimp/00metal/nifelheim-envoy_of_lucifer-promo-2007-ube/03-gates_of_damnation.mp3
                                         'working'  None
                                         'bitrate'  207
                                    'duration_sec'  271
                                           'genre'  eid-metal-black
                                        'filesize'  7061210
                                           'mtime'  1620301838
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal nifelheim envoy_of_lucifer promo 2007 ube 03 gates_of_damnation eid metal black
                                      'tag_artist'  Nifelheim
                                     'tag_release'  Envoy of Lucifer
                                       'tag_title'  Open the Gates of Damnation
                                             'bpm'  141.3
                                    'search_title'  'damnation':5 'gates':3 'of':4 'open':1 'the':2
                                   'search_artist'  'nifelheim':1
                                  'search_release'  'envoy':1 'lucifer':3 'of':2
                                     'search_rest'  '00dwimp':1 '00metal':2 '2007':8 'black':15 'damnation':12 'eid':13 'envoy':4 'gates':10 'lucifer':6 'metal':14 'nifelheim':3 'of':5,11 'promo':7 'ube':9
                                    'search_combo'  '00dwimp':10 '00metal':11 '2007':17 'black':24 'damnation':5A,21 'eid':22 'envoy':7C,13 'gates':3A,19 'lucifer':9C,15 'metal':23 'nifelheim':6B,12 'of':4A,8C,14,20 'open':1A 'promo':16 'the':2A 'ube':18
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['thrash metal', 'blackened thrash metal', 'swedish', 'black metal', 'black thrash metal']
                                        'tag_date'  2008
                                     'discogstags'  ['black metal', 'rock']

============================== file details ==============================
                                           'mtime'  1620301838.3287764  (2021-05-06 13:50:38)
                             'size'  7061210