======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '126'
                                          'artist'  'Freddy Cannon'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Four Letter Man'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  '[\'rock and roll\', \'rock n roll\', \'60s\', \'oldies\', "50\'s"]'
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '22'
                                      'tracktotal'  '34'
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'set-pl-spelling'
                                             'bpm'  '145.476'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00000C2C 00000B00 00004408 00008EC3 0001340F 0001340F 00006856 000079EE '
 '0000DFC6 0001340F')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 0000075C 000000000054C294 00000000 002E124A 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_1:eng'                            '0C128322+355616+34+150+1269+11397+22589+32169+46050+58011+71944+84449+97930+108860+119821+133767+143185+154516+164444+176435+185023+194554+196905+206636+215530+224977+235009+245950+257046+270097+274618+286319+298802+311228+320699+331417+342677'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '22'
'TBPM' (BPM (beats per minute))                     '145.476'
'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)         'Four Letter Man'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Freddy Cannon'
'TRCK' (Track number/Position in set)               '22/34'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock and roll', 'rock n roll', '60s', 'oldies', "50's"]
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.89 dB'
'TXXX:replaygain_track_peak'                        '0.565078'

========================== row from database ==========================
                                              'id'  771439
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/spelling/Freddy Cannon - Four Letter Man.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  126
                                           'genre'  set-pl-spelling
                                        'filesize'  3026482
                                           'mtime'  1620356331
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes spelling set pl spelling
                                      'tag_artist'  Freddy Cannon
                                     'tag_release'  None
                                       'tag_title'  Four Letter Man
                                             'bpm'  145.476
                                    'search_title'  'four':1 'letter':2 'man':3
                                   'search_artist'  'cannon':2 'freddy':1
                                  'search_release'  
                                     'search_rest'  '0novelty':2 '0playlists':1 'pl':6 'set':5 'spelling':4 'themes':3
                                    'search_combo'  '0novelty':7 '0playlists':6 'cannon':5B 'four':1A 'freddy':4B 'letter':2A 'man':3A 'pl':11 'set':10 'spelling':9 'themes':8
                                    'tag_tracknum'  22
                                      'num_images'  0
                                             'key'  10A
                                           '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-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'rock n roll', '60s', 'oldies', "50's"]
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620356330.9631085  (2021-05-07 04:58:50)
                             'size'  3026482