======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '138'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Garland Encyclopedia - Africa'
                                           'title'  'Anlo Ewe songs'
                                           '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-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '21'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-africa'
                                             'bpm'  '111.333'
                                             'key'  '9A'
                                        'acoustid'  '954f133e-15de-4545-aecd-a8aed019141c'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Garland Encyclopedia - Africa'
'TBPM' (BPM (beats per minute))                     '111.333'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-africa'
'TIT2' (Title/songname/content description)         'Anlo Ewe songs'
'TKEY' (Initial key)                                '9A'
'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)               '7/21'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       '[unknown]'
'TXXX:Acoustid Id'                                  '954f133e-15de-4545-aecd-a8aed019141c'
'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'                 '72a209bd-9c19-3163-989b-f6de8fb374ee'
'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'                                      '4'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.93 dB'
'TXXX:replaygain_track_peak'                        '0.565131'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'efec8345-b70d-4f06-b26d-5c6a60bbfb1e')

========================== row from database ==========================
                                              'id'  473683
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/African Original Ethno Music [128k]/07. Anlo-Ewe kinka song (Ghana).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  138
                                           'genre'  loc-africa
                                        'filesize'  2211390
                                           'mtime'  1620586277
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad African Original Ethno Music [128k] 07. kinka (Ghana) loc africa
                                      'tag_artist'  [unknown]
                                     'tag_release'  Garland Encyclopedia - Africa
                                       'tag_title'  Anlo Ewe songs
                                             'bpm'  111.333
                                    'search_title'  'anlo':1 'ewe':2 'songs':3
                                   'search_artist'  'unknown':1,2
                                  'search_release'  'africa':3 'encyclopedia':2 'garland':1
                                     'search_rest'  '07':14,15 '1':4,5,6 '128k':12,13 'africa':20 'african':8 'ethno':10 'ghana':17,18 'kinka':16 'loc':19 'music':11 'original':9 'trad':7 'va':1,2 'world':3
                                    'search_combo'  '07':22,23 '1':12,13,14 '128k':20,21 'africa':8C,28 'african':16 'anlo':1A 'encyclopedia':7C 'ethno':18 'ewe':2A 'garland':6C 'ghana':25,26 'kinka':24 'loc':27 'music':19 'original':17 'songs':3A 'trad':15 'unknown':4B,5B 'va':9,10 'world':11
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-4', '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'  1620586277.3055975  (2021-05-09 20:51:17)
                             'size'  2211390