======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '178'
                                          'artist'  'Bolt Thrower'
                                     'text_people'  ''
                                         'release'  'Realm of Chaos'
                                           'title'  'Dark Millennium'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['old school death metal', 'grindcore', 'death metal', 'metal', 'brutal "
 "death metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '12'
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '138.1'
                                             'key'  '8A'
                                        'acoustid'  'f0656e44-fff6-4f8c-bcdb-e4c66a232b16'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Realm of Chaos'
'TBPM' (BPM (beats per minute))                     '138.1'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDOR' (Original release time)                      '1989'
'TDRC' (Recording time)                             '1995-04-05'
'TIT2' (Title/songname/content description)         'Dark Millennium'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'Cassette'
'TPE1' (Lead performer(s)/Soloist(s))               'Bolt Thrower'
'TPE2' (Band/orchestra/accompaniment)               'Bolt Thrower'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Earache Records'
'TRCK' (Track number/Position in set)               '4/12'
'TSO2'                                              'Bolt Thrower'
'TSOP' (Performer sort order)                       'Bolt Thrower'
'TXXX:Acoustid Id'                                  'f0656e44-fff6-4f8c-bcdb-e4c66a232b16'
'TXXX:CATALOGNUMBER'                                'MOSH 13'
'TXXX:ENSEMBLE'                                     'Bolt-Thrower (uk)'
'TXXX:MusicBrainz Album Artist Id'                  '68bd8072-0412-44b1-81dd-807aa6c1918c'
'TXXX:MusicBrainz Album Id'                         'b97da5e0-e2c8-3a83-acc0-54328d66d175'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '68bd8072-0412-44b1-81dd-807aa6c1918c'
'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:YEAR'                                         '1989'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['old school death metal',
 'grindcore',
 'death metal',
 'metal',
 'brutal death metal']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.07 dB'
'TXXX:replaygain_track_peak'                        '0.594835'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'dcfea07b-9915-4b4a-89de-4c26cad316a7')

========================== row from database ==========================
                                              'id'  1397856
                                            'path'  /data/Music/Bulk/00dwimp/00metal/00death/Bolt Thrower - Realm of Chaos (Slaves to Darkness) CD (Relativity, 1989)/04. Bolt-Thrower (uk) - Dark Millennium.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  178
                                           'genre'  eid-metal-death
                                        'filesize'  7308298
                                           'mtime'  1620301670
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 00death (Slaves to Darkness) CD (Relativity, 1989) 04. (uk) eid metal death
                                      'tag_artist'  Bolt Thrower
                                     'tag_release'  Realm of Chaos
                                       'tag_title'  Dark Millennium
                                             'bpm'  138.1
                                    'search_title'  'dark':1 'millennium':2
                                   'search_artist'  'bolt':1 'thrower':2
                                  'search_release'  'chaos':3 'of':2 'realm':1
                                     'search_rest'  '00death':3 '00dwimp':1 '00metal':2 '04':14,15 '1989':12,13 'cd':9 'darkness':7,8 'death':20 'eid':18 'metal':19 'relativity':10,11 'slaves':4,5 'to':6 'uk':16,17
                                    'search_combo'  '00death':10 '00dwimp':8 '00metal':9 '04':21,22 '1989':19,20 'bolt':3B 'cd':16 'chaos':7C 'dark':1A 'darkness':14,15 'death':27 'eid':25 'metal':26 'millennium':2A 'of':6C 'realm':5C 'relativity':17,18 'slaves':11,12 'thrower':4B 'to':13 'uk':23,24
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['old school death metal', 'grindcore', 'death metal', 'metal', 'brutal death metal']
                                        'tag_date'  1995
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301669.657527  (2021-05-06 13:47:49)
                             'size'  7308298