======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '241'
                                          'artist'  'Kontrust'
                                     'text_people'  ''
                                         'release'  'Make Me Blind'
                                           'title'  'One Nation/One Fall'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-4', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['austrian', 'austria', 'metal', 'nu metal', 'crossover']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '5'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'eid-metal-nu'
                                             'bpm'  '136.001'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Make Me Blind'
'TBPM' (BPM (beats per minute))                     '136.001'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-nu'
'TDOR' (Original release time)                      '2003'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'One Nation/One Fall'
'TKEY' (Initial key)                                '1A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Kontrust'
'TPE2' (Band/orchestra/accompaniment)               'Kontrust'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '5/5'
'TSO2'                                              'Kontrust'
'TSOP' (Performer sort order)                       'Kontrust'
'TXXX:MusicBrainz Album Artist Id'                  '3dffd6a7-9fc6-4875-be64-f4c71e195f5c'
'TXXX:MusicBrainz Album Id'                         '1b088649-d2c8-4132-a329-b03ef71edd80'
'TXXX:MusicBrainz Album Release Country'            'PL'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'ep'
'TXXX:MusicBrainz Artist Id'                        '3dffd6a7-9fc6-4875-be64-f4c71e195f5c'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '4'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['austrian', 'austria', 'metal', 'nu metal', 'crossover']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.39 dB'
'TXXX:replaygain_track_peak'                        '0.460439'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'0f48fe89-d8d6-4f2c-a003-d11f4deddd23')

========================== row from database ==========================
                                              'id'  1401339
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Kontrust/05- One Nation, One Fall.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  241
                                           'genre'  eid-metal-nu
                                        'filesize'  3867752
                                           'mtime'  1620311090
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 05 Nation, eid metal nu
                                      'tag_artist'  Kontrust
                                     'tag_release'  Make Me Blind
                                       'tag_title'  One Nation/One Fall
                                             'bpm'  136.001
                                    'search_title'  'fall':5 'nation':2 'nationone':4 'one':1,3
                                   'search_artist'  'kontrust':1
                                  'search_release'  'blind':3 'make':1 'me':2
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':5 'metal':6 'nation':3,4 'nu':7
                                    'search_combo'  '00dwimp':10 '00metal':11 'blind':9C 'eid':14 'fall':5A 'kontrust':6B 'make':7C 'me':8C 'metal':15 'nation':2A,12,13 'nationone':4A 'nu':16 'one':1A,3A
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-4', '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-3', 'q-grit-4']
                                      'lastfmtags'  ['austrian', 'austria', 'metal', 'nu metal', 'crossover']
                                        'tag_date'  2003
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620311089.8927424  (2021-05-06 16:24:49)
                             'size'  3867752