======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '170'
                                          'artist'  'Nifelheim'
                                     'text_people'  ''
                                         'release'  'Servants of Darkness'
                                           'title'  'Sadistic Blood Massacre'
                                           '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-4', 'q-grit-4', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'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'  '2'
                                      'tracktotal'  '9'
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'eid-metal-trash'
                                             'bpm'  '155'
                                             'key'  '3A'
                                        'acoustid'  '028c8be0-15db-45ed-a2e0-487d4f47fc8c'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'TALB' (Album/Movie/Show title)                     'Servants of Darkness'
'TBPM' (BPM (beats per minute))                     '155'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-trash'
'TDOR' (Original release time)                      '2000'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'Sadistic Blood Massacre'
'TKEY' (Initial key)                                '3A'
'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'Nifelheim'
'TPE2' (Band/orchestra/accompaniment)               'Nifelheim'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Back on Black'
'TRCK' (Track number/Position in set)               '2/9'
'TSO2'                                              'Nifelheim'
'TSOP' (Performer sort order)                       'Nifelheim'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.81.02, LAME dll 3.91, 192 Kbit/s, Stereo, Normal quality'
'TXXX:Acoustid Id'                                  '028c8be0-15db-45ed-a2e0-487d4f47fc8c'
'TXXX:Artists'                                      'Nifelheim'
'TXXX:CATALOGNUMBER'                                'BOBV102LP'
'TXXX:MusicBrainz Album Artist Id'                  '51f5f29e-ffc2-4c99-927b-f80259d32a04'
'TXXX:MusicBrainz Album Id'                         '5cbf7f19-c01e-4b07-a982-cef57b96c117'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '51f5f29e-ffc2-4c99-927b-f80259d32a04'
'TXXX:MusicBrainz Release Group Id'                 'b89b4c99-b2aa-3ee2-9bed-57cbe610fcf3'
'TXXX:MusicBrainz Release Track Id'                 '330a9894-8e8e-4786-81d7-0b08a6b452c3'
'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:originalyear'                                 '2000'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '4'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.66 dB'
'TXXX:replaygain_track_peak'                        '0.315854'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'0475b561-e57d-4853-a4ad-f7ff2b9a4574')

========================== row from database ==========================
                                              'id'  1401722
                                            'path'  /data/Music/Bulk/00dwimp/00metal/nifelheim/Servants of Darkness/nifelheim - 02 - sadistic blood massacre.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  170
                                           'genre'  eid-metal-trash
                                        'filesize'  4126354
                                           'mtime'  1620311644
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal nifelheim nifelheim 02 sadistic blood massacre eid metal trash
                                      'tag_artist'  Nifelheim
                                     'tag_release'  Servants of Darkness
                                       'tag_title'  Sadistic Blood Massacre
                                             'bpm'  155.0
                                    'search_title'  'blood':2 'massacre':3 'sadistic':1
                                   'search_artist'  'nifelheim':1
                                  'search_release'  'darkness':3 'of':2 'servants':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'blood':5 'eid':7 'massacre':6 'metal':8 'nifelheim':3 'sadistic':4 'trash':9
                                    'search_combo'  '00dwimp':8 '00metal':9 'blood':2A,12 'darkness':7C 'eid':14 'massacre':3A,13 'metal':15 'nifelheim':4B,10 'of':6C 'sadistic':1A,11 'servants':5C 'trash':16
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  3A
                                           '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-4', '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'  1620311644.1952536  (2021-05-06 16:34:04)
                             'size'  4126354