======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '184'
                                          'artist'  'Celtic Frost'
                                     'text_people'  ''
                                         'release'  'Into the Pandemonium'
                                           'title'  'Sorrows of the Moon'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-4', 'q-grit-4', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['thrash metal', 'death metal', 'black metal', 'doom metal', 'metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '15'
                                            'date'  '2013'
                                        'comments'  ''
                                           'genre'  'eid-metal-black'
                                             'bpm'  '105.808'
                                             'key'  '9A'
                                        'acoustid'  '8f587e50-09b6-461d-8c8f-6ef8b67ad2c9'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Into the Pandemonium'
'TBPM' (BPM (beats per minute))                     '105.808'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-black'
'TDOR' (Original release time)                      '1987'
'TDRC' (Recording time)                             '2013-08-01'
'TIT2' (Title/songname/content description)         'Sorrows of the Moon'
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               'Celtic Frost'
'TPE2' (Band/orchestra/accompaniment)               'Celtic Frost'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'PIAS Digital/Sanctuary Records'
'TRCK' (Track number/Position in set)               '9/15'
'TSO2'                                              'Celtic Frost'
'TSOP' (Performer sort order)                       'Celtic Frost'
'TSRC' (ISRC (international standard recording code))  'DEA249919009'
'TXXX:Acoustid Id'                                  '8f587e50-09b6-461d-8c8f-6ef8b67ad2c9'
'TXXX:MusicBrainz Album Artist Id'                  'd91b3683-4622-4d72-8a03-80f1ff59e639'
'TXXX:MusicBrainz Album Id'                         'ef81abd4-d1d6-41d6-b22c-520395b8c35c'
'TXXX:MusicBrainz Album Release Country'            'XW'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'd91b3683-4622-4d72-8a03-80f1ff59e639'
'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'                                  'rock'
'TXXX:lastfmtags'                                   ['thrash metal', 'death metal', 'black metal', 'doom metal', 'metal']
'TXXX:q-bass'                                       '3'
'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'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.62 dB'
'TXXX:replaygain_track_peak'                        '0.596301'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'3114d95e-f162-434b-af48-f088579148c5')

========================== row from database ==========================
                                              'id'  1390605
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Celtic Frost - Into the pandemonium/09 sorrows of the moon.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  184
                                           'genre'  eid-metal-black
                                        'filesize'  4433762
                                           'mtime'  1620301496
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal pandemonium 09 sorrows moon eid metal black
                                      'tag_artist'  Celtic Frost
                                     'tag_release'  Into the Pandemonium
                                       'tag_title'  Sorrows of the Moon
                                             'bpm'  105.808
                                    'search_title'  'moon':4 'of':2 'sorrows':1 'the':3
                                   'search_artist'  'celtic':1 'frost':2
                                  'search_release'  'into':1 'pandemonium':3 'the':2
                                     'search_rest'  '00dwimp':1 '00metal':2 'black':8 'eid':6 'metal':7 'moon':5 'pandemonium':3 'sorrows':4
                                    'search_combo'  '00dwimp':10 '00metal':11 'black':17 'celtic':5B 'eid':15 'frost':6B 'into':7C 'metal':16 'moon':4A,14 'of':2A 'pandemonium':9C,12 'sorrows':1A,13 'the':3A,8C
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  9A
                                           '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-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['thrash metal', 'death metal', 'black metal', 'doom metal', 'metal']
                                        'tag_date'  2013
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301495.8561268  (2021-05-06 13:44:55)
                             'size'  4433762