======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '325'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Brahma Putra dance'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-asia-tibet'
                                             'bpm'  '112.321'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '112.321'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-tibet'
'TIT2' (Title/songname/content description)         'Brahma Putra dance'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.69 dB'
'TXXX:replaygain_track_peak'                        '0.611597'

========================== row from database ==========================
                                              'id'  1534569
                                            'path'  /data/Music/Bulk/00poprockelectronic/Tibet__Brahma Putra dance.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  325
                                           'genre'  loc-asia-tibet
                                        'filesize'  5218645
                                           'mtime'  1620534537
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Tibet__Brahma loc asia tibet
                                      'tag_artist'  [unknown]
                                     'tag_release'  None
                                       'tag_title'  Brahma Putra dance
                                             'bpm'  112.321
                                    'search_title'  'brahma':1 'dance':3 'putra':2
                                   'search_artist'  'unknown':1,2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'asia':5 'brahma':3 'loc':4 'tibet':2,6
                                    'search_combo'  '00poprockelectronic':6 'asia':10 'brahma':1A,8 'dance':3A 'loc':9 'putra':2A 'tibet':7,11 'unknown':4B,5B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620534536.816445  (2021-05-09 06:28:56)
                             'size'  5218645