======================== unified (from filesystem) ========================
                                         'bitrate'  '112.966'
                                        'duration'  '96'
                                          'artist'  'Malvina Reynolds'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Little Boxes'
                                           'quals'  ("['Q-HAP-4', 'Q-SYN-1', 'Q-UNU-1', 'Q-BUSY-2', 'Q-GRIT-1', 'Q-PLAY-3', "
 "'q-bass-2', 'Q-CHART-2', 'Q-JZFKS-1', 'Q-OLDST-1', 'q-drums-1', 'q-other-3', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'Q-MIXBEAT-2', 'Q-LOCALNESS-3']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '137.7'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '137.7'
'TIT2' (Title/songname/content description)         'Little Boxes'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Malvina Reynolds'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '1'
'TXXX:Q-HAP'                                        '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+5.56 dB'
'TXXX:replaygain_track_peak'                        '0.307141'

========================== row from database ==========================
                                              'id'  1538913
                                            'path'  /data/Music/Bulk/00localcharacter/Malvina Reynolds - Little Boxes  [HD]-MZ8HEbcQG-U.mp3
                                         'working'  None
                                         'bitrate'  113
                                    'duration_sec'  96
                                           'genre'  
                                        'filesize'  1366727
                                           'mtime'  1678464646
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter [HD] MZ8HEbcQG U
                                      'tag_artist'  Malvina Reynolds
                                     'tag_release'  None
                                       'tag_title'  Little Boxes
                                             'bpm'  137.7
                                    'search_title'  'boxes':2 'little':1
                                   'search_artist'  'malvina':1 'reynolds':2
                                  'search_release'  
                                     'search_rest'  'hd':1,2 'mz8hebc':5 'mz8hebcqg':3 'qg':6 'u':4
                                    'search_combo'  'boxes':2A 'hd':5,6 'little':1A 'malvina':3B 'mz8hebc':9 'mz8hebcqg':7 'qg':10 'reynolds':4B 'u':8
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HAP-4', 'Q-SYN-1', 'Q-UNU-1', 'Q-BUSY-2', 'Q-GRIT-1', 'Q-PLAY-3', 'q-bass-2', 'Q-CHART-2', 'Q-JZFKS-1', 'Q-OLDST-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'Q-MIXBEAT-2', 'Q-LOCALNESS-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1678464646.3601577  (2023-03-10 17:10:46)
                             'size'  1366727