======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '336'
                                          'artist'  'François Muduga'
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                                         'release'  'Burundi : Musiques traditionnelles'
                                           'title'  'Chant à voix chuchotée et cithare inanga'
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '17'
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'loc-africa-burundi'
                                             'bpm'  '127.685'
                                             'key'  '1B'
                                        'acoustid'  'd009400f-8069-42dc-9a36-e4c196085252'
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======================== rawer (from filesystem) ========================

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'COMM:iTunNORM:eng'                                 (' 0000009B 000000C6 000022A7 00001F94 0004EA5E 0004EB49 00004E5F 00005E67 '
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'COMM:iTunPGAP:eng'                                 '0'
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'COMM:iTunes_CDDB_IDs:eng'                          '17+75F2A645D6071902B51F695143B08F19+884027'
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'TBPM' (BPM (beats per minute))                     '127.685'
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'TCON' (Content type, a.k.a. Genre)                 'loc-africa-burundi'
'TDOR' (Original release time)                      '1968'
'TDRC' (Recording time)                             '1968'
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'TIT2' (Title/songname/content description)         'Chant à voix chuchotée et cithare inanga'
'TKEY' (Initial key)                                '1B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'François Muduga'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Ocora'
'TRCK' (Track number/Position in set)               '1/17'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Muduga, François'
'TXXX:ASIN'                                         'B00PR2CLI0'
'TXXX:Acoustid Id'                                  'd009400f-8069-42dc-9a36-e4c196085252'
'TXXX:Artists'                                      'François Muduga'
'TXXX:BARCODE'                                      '3149028060522'
'TXXX:CATALOGNUMBER'                                'C 582003'
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'TXXX:MusicBrainz Release Track Id'                 '509ebe40-bd08-4222-b96e-9cadceb859c1'
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'TXXX:Q-JZFKS'                                      '1'
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'TXXX:SCRIPT'                                       'Latn'
'TXXX:originalyear'                                 '1968'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
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'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '1'
'TXXX:q-syn'                                        '1'
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'TXXX:replaygain_track_gain'                        '+2.71 dB'
'TXXX:replaygain_track_peak'                        '0.876547'
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========================== row from database ==========================
                                              'id'  477515
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/Burundi： Musiques Traditionnelles (Ocora, 1967) [320k]/01 Chant avec cithare.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  336
                                           'genre'  loc-africa-burundi
                                        'filesize'  13582059
                                           'mtime'  1620586304
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad Burundi： Traditionnelles (Ocora, 1967) [320k] 01 avec loc africa burundi
                                      'tag_artist'  François Muduga
                                     'tag_release'  Burundi : Musiques traditionnelles
                                       'tag_title'  Chant à voix chuchotée et cithare inanga
                                             'bpm'  127.685
                                    'search_title'  'a':2,3 'chant':1 'chuchotee':5,6 'cithare':8 'et':7 'inanga':9 'voix':4
                                   'search_artist'  'francois':1,2 'muduga':3
                                  'search_release'  'burundi':1 'musiques':2 'traditionnelles':3
                                     'search_rest'  '1':4,5,6 '1967':14,15 '320k':16,17 'africa':20 'avec':18 'burundi':8,9,10 'loc':19 'ocora':12,13 'trad':7 'traditionnelles':11 'va':1,2 'world':3
                                    'search_combo'  '1':19,20,21 '1967':29,30 '320k':31,32 'a':2A,3A 'africa':35 'avec':33 'burundi':13C,23,24,25 'chant':1A 'chuchotee':5A,6A 'cithare':8A 'et':7A 'francois':10B,11B 'inanga':9A 'loc':34 'muduga':12B 'musiques':14C 'ocora':27,28 'trad':22 'traditionnelles':15C,26 'va':16,17 'voix':4A 'world':18
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-1', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1968
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620586303.5528097  (2021-05-09 20:51:43)
                             'size'  13582059