======================== unified (from filesystem) ========================
                                         'bitrate'  '160.069'
                                        'duration'  '236'
                                          'artist'  'Central African Republic'
                                     'text_people'  ''
                                         'release'  'Songs of the Earth - Astonishing and Rare Voices'
                                           'title'  'Dikoboda Sombe (Hut Song)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-3', 'Q-LOCALNESS-4', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'loc-unsorted-mix'
                                             'bpm'  '135.184'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Songs of the Earth - Astonishing and Rare Voices'
'TBPM' (BPM (beats per minute))                     '135.184'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted-mix'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'Dikoboda Sombe (Hut Song)'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Central African Republic'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '16'
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.38 dB'
'TXXX:replaygain_track_peak'                        '0.585596'

========================== row from database ==========================
                                              'id'  473384
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/Songs Of The Earth： Astonishing and Rare Voices (Auvidis, Unesco, 1998) [160k]/16 - Central African Republic - Dikoboda Sombe (Hut Song).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  236
                                           'genre'  loc-unsorted-mix
                                        'filesize'  4724754
                                           'mtime'  1621627243
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad Of The Earth： (Auvidis, Unesco, 1998) [160k] 16 loc unsorted mix
                                      'tag_artist'  Central African Republic
                                     'tag_release'  Songs of the Earth - Astonishing and Rare Voices
                                       'tag_title'  Dikoboda Sombe (Hut Song)
                                             'bpm'  135.184
                                    'search_title'  'dikoboda':1 'hut':3,4 'sombe':2 'song':5,6
                                   'search_artist'  'african':2 'central':1 'republic':3
                                  'search_release'  'and':6 'astonishing':5 'earth':4 'of':2 'rare':7 'songs':1 'the':3 'voices':8
                                     'search_rest'  '1':4,5,6 '160k':19,20 '1998':17,18 'auvidis':13,14 'earth':10,11,12 'loc':21 'mix':23 'of':8 'the':9 'trad':7 'unesco':15,16 'unsorted':22 'va':1,2 'world':3
                                    'search_combo'  '1':21,22,23 '160k':36,37 '1998':34,35 'african':8B 'and':15C 'astonishing':14C 'auvidis':30,31 'central':7B 'dikoboda':1A 'earth':13C,27,28,29 'hut':3A,4A 'loc':38 'mix':40 'of':11C,25 'rare':16C 'republic':9B 'sombe':2A 'song':5A,6A 'songs':10C 'the':12C,26 'trad':24 'unesco':32,33 'unsorted':39 'va':18,19 'voices':17C 'world':20
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  6B
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627242.896671  (2021-05-21 22:00:42)
                             'size'  4724754