======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '124'
                                          'artist'  'Edil Huseinov'
                                     'text_people'  ''
                                         'release'  'The Silk Road: A Musical Caravan (disc 2: Minstrels and Lovers)'
                                           'title'  'Qara Olu (Kazakh-Mongol)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'Q-PLAY-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['world', 'central asian', 'kazakh', 'folk', 'central asia']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'loc-asia'
                                             'bpm'  '141.9'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Silk Road: A Musical Caravan (disc 2: Minstrels and Lovers)'
'TBPM' (BPM (beats per minute))                     '141.9'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Qara Olu (Kazakh-Mongol)'
'TKEY' (Initial key)                                '9B'
'TLEN' (Length)                                     '124340'
'TPE1' (Lead performer(s)/Soloist(s))               'Edil Huseinov'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   ['world', 'central asian', 'kazakh', 'folk', 'central asia']
'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'                                      '4'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.36 dB'
'TXXX:replaygain_track_peak'                        '0.814003'

========================== row from database ==========================
                                              'id'  729865
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Various Artists - The Silk Road - Minstrels And Lovers [Disc 2] [@320]/15 - Edil Huseinov - Qara Olu (Kazakh-Mongol).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  124
                                           'genre'  loc-asia
                                        'filesize'  4974640
                                           'mtime'  1652397814
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Various Artists And [Disc 2] [@320] 15 loc asia
                                      'tag_artist'  Edil Huseinov
                                     'tag_release'  The Silk Road: A Musical Caravan (disc 2: Minstrels and Lovers)
                                       'tag_title'  Qara Olu (Kazakh-Mongol)
                                             'bpm'  141.9
                                    'search_title'  'kazakh':3 'kazakhmongol':5 'mongol':4 'olu':2 'qara':1
                                   'search_artist'  'edil':1 'huseinov':2
                                  'search_release'  '2':10,11 'a':5 'and':13 'caravan':7 'disc':8,9 'lovers':14,15 'minstrels':12 'musical':6 'road':3,4 'silk':2 'the':1
                                     'search_rest'  '2':6,7 '320':8,9 'and':3 'artists':2 'asia':11 'disc':4,5 'loc':10 'various':1
                                    'search_combo'  '2':17C,18C,28,29 '320':30,31 'a':12C 'and':20C,25 'artists':24 'asia':33 'caravan':14C 'disc':15C,16C,26,27 'edil':6B 'huseinov':7B 'kazakh':3A 'kazakhmongol':5A 'loc':32 'lovers':21C,22C 'minstrels':19C 'mongol':4A 'musical':13C 'olu':2A 'qara':1A 'road':10C,11C 'silk':9C 'the':8C 'various':23
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HAP-3', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-LOCALNESS-4', 'Q-PLAY-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-1', 'q-mixbeat-1']
                                      'lastfmtags'  ['world', 'central asian', 'kazakh', 'folk', 'central asia']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1652397814.0490856  (2022-05-13 01:23:34)
                             'size'  4974640