======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '271'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Garland Encyclopedia - Africa'
                                           'title'  'Kpelle'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-UNU-3', 'Q-LOCALNESS-4', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '21'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-africa'
                                             'bpm'  '101.870'
                                             'key'  '3A'
                                        'acoustid'  '5a8ea924-628a-404f-888f-d2d3a0331cfd'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Garland Encyclopedia - Africa'
'TBPM' (BPM (beats per minute))                     '101.870'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-africa'
'TIT2' (Title/songname/content description)         'Kpelle'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '1/21'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       '[unknown]'
'TXXX:Acoustid Id'                                  '5a8ea924-628a-404f-888f-d2d3a0331cfd'
'TXXX:Artists'                                      '[unknown]'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         'b99568c2-5898-4899-a308-21ea1fe1e0f9'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '125ec42a-7229-4250-afc5-e057484327fe'
'TXXX:MusicBrainz Release Group Id'                 '66e8bc12-c690-3f8c-b21a-3285603a126d'
'TXXX:MusicBrainz Release Track Id'                 '69013f85-17d5-3b98-894e-d7e3f6b3e860'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.35 dB'
'TXXX:replaygain_track_peak'                        '0.831720'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'15e51ddb-b0d8-40dc-aa7a-b9448cb6829a')

========================== row from database ==========================
                                              'id'  477155
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/African Original Ethno Music [128k]/01. Kpelle Woi-mene-pele epic excerpt (Liberia).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  271
                                           'genre'  loc-africa
                                        'filesize'  4350505
                                           'mtime'  1620586271
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad African Original Ethno Music [128k] 01. Woi mene pele epic excerpt (Liberia) loc africa
                                      'tag_artist'  [unknown]
                                     'tag_release'  Garland Encyclopedia - Africa
                                       'tag_title'  Kpelle
                                             'bpm'  101.87
                                    'search_title'  'kpelle':1
                                   'search_artist'  'unknown':1,2
                                  'search_release'  'africa':3 'encyclopedia':2 'garland':1
                                     'search_rest'  '01':14,15 '1':4,5,6 '128k':12,13 'africa':24 'african':8 'epic':19 'ethno':10 'excerpt':20 'liberia':21,22 'loc':23 'mene':17 'music':11 'original':9 'pele':18 'trad':7 'va':1,2 'woi':16 'world':3
                                    'search_combo'  '01':20,21 '1':10,11,12 '128k':18,19 'africa':6C,30 'african':14 'encyclopedia':5C 'epic':25 'ethno':16 'excerpt':26 'garland':4C 'kpelle':1A 'liberia':27,28 'loc':29 'mene':23 'music':17 'original':15 'pele':24 'trad':13 'unknown':2B,3B 'va':7,8 'woi':22 'world':9
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620586271.4274545  (2021-05-09 20:51:11)
                             'size'  4350505