======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '310'
                                          'artist'  'Dimmu Borgir'
                                     'text_people'  ''
                                         'release'  'Spiritual Black Dimensions'
                                           'title'  'Grotesquery Conceiled (Within Measureless Magic)'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
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 "'q-chart-3', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['melodic black metal', 'symphonic black metal', 'black metal', 'metal', "
 "'norwegian']")
                                     'discogstags'  "['black metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '10'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'eid-metal-black'
                                             'bpm'  '144.233'
                                             'key'  '4A'
                                        'acoustid'  '2aa7864b-8260-4b1e-8f4d-841a6e51ade2'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Spiritual Black Dimensions'
'TBPM' (BPM (beats per minute))                     '144.233'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-black'
'TDOR' (Original release time)                      '1999'
'TDRC' (Recording time)                             '2000-03-23'
'TIT2' (Title/songname/content description)         'Grotesquery Conceiled (Within Measureless Magic)'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Dimmu Borgir'
'TPE2' (Band/orchestra/accompaniment)               'Dimmu Borgir'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'AVALON'
'TRCK' (Track number/Position in set)               '8/10'
'TSO2'                                              'Dimmu Borgir'
'TSOP' (Performer sort order)                       'Dimmu Borgir'
'TSRC' (ISRC (international standard recording code))  'DED839800758'
'TXXX:ASIN'                                         'B00004T8H6'
'TXXX:Acoustid Id'                                  '2aa7864b-8260-4b1e-8f4d-841a6e51ade2'
'TXXX:BARCODE'                                      '4527516001216'
'TXXX:CATALOGNUMBER'                                'MICP-10101'
'TXXX:MusicBrainz Album Artist Id'                  '17167af8-c1da-45cc-bba2-9d23f068b7a3'
'TXXX:MusicBrainz Album Id'                         '3c5366a9-557c-3d25-b21f-7373a0b26b46'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '17167af8-c1da-45cc-bba2-9d23f068b7a3'
'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'                                   ['melodic black metal',
 'symphonic black metal',
 'black metal',
 'metal',
 'norwegian']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.22 dB'
'TXXX:replaygain_track_peak'                        '0.325807'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'c1964279-35d4-4b35-b6d7-e74501a2eab7')

========================== row from database ==========================
                                              'id'  1392289
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Dimmu Borgir/Spiritual Black Dimensions/08 - Grotesquery Conceiled.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  310
                                           'genre'  eid-metal-black
                                        'filesize'  4968274
                                           'mtime'  1620301640
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 08 eid metal black
                                      'tag_artist'  Dimmu Borgir
                                     'tag_release'  Spiritual Black Dimensions
                                       'tag_title'  Grotesquery Conceiled (Within Measureless Magic)
                                             'bpm'  144.233
                                    'search_title'  'conceiled':2 'grotesquery':1 'magic':6,7 'measureless':5 'within':3,4
                                   'search_artist'  'borgir':2 'dimmu':1
                                  'search_release'  'black':2 'dimensions':3 'spiritual':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'black':5 'eid':3 'metal':4
                                    'search_combo'  '00dwimp':13 '00metal':14 'black':11C,17 'borgir':9B 'conceiled':2A 'dimensions':12C 'dimmu':8B 'eid':15 'grotesquery':1A 'magic':6A,7A 'measureless':5A 'metal':16 'spiritual':10C 'within':3A,4A
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  4A
                                           '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-3', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['melodic black metal', 'symphonic black metal', 'black metal', 'metal', 'norwegian']
                                        'tag_date'  2000
                                     'discogstags'  ['black metal', 'rock']

============================== file details ==============================
                                           'mtime'  1620301639.7593415  (2021-05-06 13:47:19)
                             'size'  4968274