======================== unified (from filesystem) ========================
                                         'bitrate'  '96.0'
                                        'duration'  '125'
                                          'artist'  'Cadillacs'
                                     'text_people'  ''
                                         'release'  'The Best of the Cadillacs'
                                           'title'  'Please, Mr. Johnson'
                                           'quals'  ("['Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['doo wop', 'rock and roll', '50s', 'doo-wop', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'set-th-candy'
                                             'bpm'  '104.390'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:Amadeus II 3.5:pdat\x00\x00\x00\x1cAHCGDGCHAAAAAAGAAACPPDAIAAAA'  PRIV(owner='Amadeus II 3.5', data=b'pdat\x00\x00\x00\x1cAHCGDGCHAAAAAAGAAACPPDAIAAAA')
'PRIV:AverageLevel:{\x04\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x04\x00\x00')
'PRIV:PeakValue:!\x00\x00\x00'                      PRIV(owner='PeakValue', data=b'!\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'The Best of the Cadillacs'
'TBPM' (BPM (beats per minute))                     '104.390'
'TCON' (Content type, a.k.a. Genre)                 'set-th-candy'
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         'Please, Mr. Johnson'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Cadillacs'
'TRCK' (Track number/Position in set)               '16'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['doo wop', 'rock and roll', '50s', 'doo-wop', 'oldies']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.11 dB'
'TXXX:replaygain_track_peak'                        '0.553839'

========================== row from database ==========================
                                              'id'  735967
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/The Cadillacs - Please, Mr. Johnson (monoized).mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  125
                                           'genre'  set-th-candy
                                        'filesize'  1523430
                                           'mtime'  1620343127
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sweets (monoized) set candy
                                      'tag_artist'  Cadillacs
                                     'tag_release'  The Best of the Cadillacs
                                       'tag_title'  Please, Mr. Johnson
                                             'bpm'  104.39
                                    'search_title'  'johnson':5 'mr':3,4 'please':1,2
                                   'search_artist'  'cadillacs':1
                                  'search_release'  'best':2 'cadillacs':4 'of':3 'the':1
                                     'search_rest'  'candy':9 'country':4 'exotica':2 'jazz':1 'monoized':6,7 'oldies':3 'set':8 'sweets':5
                                    'search_combo'  'best':8C 'cadillacs':6B,10C 'candy':19 'country':14 'exotica':12 'jazz':11 'johnson':5A 'monoized':16,17 'mr':3A,4A 'of':9C 'oldies':13 'please':1A,2A 'set':18 'sweets':15 'the':7C
                                    'tag_tracknum'  16
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['doo wop', 'rock and roll', '50s', 'doo-wop', 'oldies']
                                        'tag_date'  1990
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343126.7881777  (2021-05-07 01:18:46)
                             'size'  1523430