======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '200'
                                          'artist'  'Cachao, Enrique Chia'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Patricia'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'Q-PLAY-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-1', 'q-vocals-1', 'q-mixbeat-1', "
 "'Q-PIANO-4']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '137.292'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '137.292'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'Patricia'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Cachao, Enrique Chia'
'TPE2' (Band/orchestra/accompaniment)               'Cachao, Enrique Chia'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+9.86 dB'
'TXXX:replaygain_track_peak'                        '0.186588'

========================== row from database ==========================
                                              'id'  1327939
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Cachao, Enrique Chia - Patricia [].mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  200
                                           'genre'  
                                        'filesize'  4808704
                                           'mtime'  1652397947
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] []
                                      'tag_artist'  Cachao, Enrique Chia
                                     'tag_release'  None
                                       'tag_title'  Patricia
                                             'bpm'  137.292
                                    'search_title'  'patricia':1
                                   'search_artist'  'cachao':1,2 'chia':4 'enrique':3
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'files':5,6 'loose':3,4 'unsorted':2
                                    'search_combo'  '00poprockelectronic':6 'cachao':2B,3B 'chia':5B 'enrique':4B 'files':10,11 'loose':8,9 'patricia':1A 'unsorted':7
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HAP-2', 'Q-OLDST-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-PLAY-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-chart-2', 'q-drums-2', 'q-other-1', 'q-vocals-1', 'q-mixbeat-1', 'Q-PIANO-4']
                                      'lastfmtags'  []
                                        'tag_date'  2008
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1652397947.3399508  (2022-05-13 01:25:47)
                             'size'  4808704