======================== unified (from filesystem) ========================
                                         'bitrate'  '96.0'
                                        'duration'  '154'
                                          'artist'  'The Warner Brothers'
                                     'text_people'  ''
                                         'release'  'Destination (Chi.) 612; wr. Juan Guillermo'
                                           'title'  'Please Mr. Sullivan'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-2', 'q-other-1', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  '[\'rock\', \'garage rock\', "60\'s", \'chicago garage\']'
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'set-pl-spelling'
                                             'bpm'  '116.587'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00000A73 00000A73 00004743 00004743 000216E5 000216E5 000081EC 000081EC '
 '00009C1F 00009C1F')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000798 0000000000681858 00000000 0038982A 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_1:eng'                            'D812B41F+359300+31+150+12115+22622+28774+40014+52191+63643+74669+85023+96040+106242+118234+129325+139648+150665+174465+193691+201920+211896+223169+239191+251160+262762+272742+284689+295808+307230+319228+326397+338407+348250'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '22'
'TALB' (Album/Movie/Show title)                     'Destination (Chi.) 612; wr. Juan Guillermo'
'TBPM' (BPM (beats per minute))                     '116.587'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-spelling'
'TDRC' (Recording time)                             '1965'
'TENC' (Encoded by)                                 'iTunes 8.0.2'
'TIT2' (Title/songname/content description)         'Please Mr. Sullivan'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Warner Brothers'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['rock', 'garage rock', "60's", 'chicago garage']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.60 dB'
'TXXX:replaygain_track_peak'                        '0.475347'

========================== row from database ==========================
                                              'id'  771180
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/spelling/The Warner Brothers - Please Mr. Sullivan.mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  154
                                           'genre'  set-pl-spelling
                                        'filesize'  1860009
                                           'mtime'  1620356445
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes spelling set pl spelling
                                      'tag_artist'  The Warner Brothers
                                     'tag_release'  Destination (Chi.) 612; wr. Juan Guillermo
                                       'tag_title'  Please Mr. Sullivan
                                             'bpm'  116.587
                                    'search_title'  'mr':2,3 'please':1 'sullivan':4
                                   'search_artist'  'brothers':3 'the':1 'warner':2
                                  'search_release'  '612':4,5 'chi':2,3 'destination':1 'guillermo':9 'juan':8 'wr':6,7
                                     'search_rest'  '0novelty':2 '0playlists':1 'pl':6 'set':5 'spelling':4 'themes':3
                                    'search_combo'  '0novelty':18 '0playlists':17 '612':11C,12C 'brothers':7B 'chi':9C,10C 'destination':8C 'guillermo':16C 'juan':15C 'mr':2A,3A 'pl':22 'please':1A 'set':21 'spelling':20 'sullivan':4A 'the':5B 'themes':19 'warner':6B 'wr':13C,14C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'garage rock', "60's", 'chicago garage']
                                        'tag_date'  1965
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620356444.5315638  (2021-05-07 05:00:44)
                             'size'  1860009