======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '160'
                                          'artist'  'Roy Budd'
                                     'text_people'  ''
                                         'release'  'Get Carter'
                                           'title'  'Love Is A Four Letter Word'
                                           'quals'  ("['Q-JZFKS-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['jazz', 'easy listening', 'soundtrack', 'soundtracks', 'funk']"
                                     'discogstags'  ("['easy listening', 'soundtrack', 'soul-jazz', 'jazz-funk', 'funk', 'theme', "
 "'jazz', 'funk / soul', 'stage & screen']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  '29'
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'set-pl-spelling'
                                             'bpm'  '91.144'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00000236 0000065A 00003014 00004EFA 0001C00F 0001BFF5 000083C5 000085A0 '
 '000055EB 00003614')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000948 00000000006C1428 00000000 003AC415 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_1:eng'                            'C111FF1D+345742+29+150+13681+28669+39744+56054+67425+78561+88819+99323+109114+123713+137645+148268+159199+168901+183700+195256+207302+212918+224976+238560+254013+262673+274639+285032+297493+315827+325371+334011'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '17'
'TALB' (Album/Movie/Show title)                     'Get Carter'
'TBPM' (BPM (beats per minute))                     '91.144'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-spelling'
'TDOR' (Original release time)                      '1971'
'TDRC' (Recording time)                             '1971'
'TENC' (Encoded by)                                 'iTunes 9.0.3'
'TIT2' (Title/songname/content description)         'Love Is A Four Letter Word'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Roy Budd'
'TRCK' (Track number/Position in set)               '17/29'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['easy listening',
 'soundtrack',
 'soul-jazz',
 'jazz-funk',
 'funk',
 'theme',
 'jazz',
 'funk / soul',
 'stage & screen']
'TXXX:lastfmtags'                                   ['jazz', 'easy listening', 'soundtrack', 'soundtracks', 'funk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.40 dB'
'TXXX:replaygain_track_peak'                        '0.738452'

========================== row from database ==========================
                                              'id'  767526
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/spelling/Roy Budd - Love Is A Four Letter Word.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  160
                                           'genre'  set-pl-spelling
                                        'filesize'  3858482
                                           'mtime'  1620356397
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes spelling set pl spelling
                                      'tag_artist'  Roy Budd
                                     'tag_release'  Get Carter
                                       'tag_title'  Love Is A Four Letter Word
                                             'bpm'  91.144
                                    'search_title'  'a':3 'four':4 'is':2 'letter':5 'love':1 'word':6
                                   'search_artist'  'budd':2 'roy':1
                                  'search_release'  'carter':2 'get':1
                                     'search_rest'  '0novelty':2 '0playlists':1 'pl':6 'set':5 'spelling':4 'themes':3
                                    'search_combo'  '0novelty':12 '0playlists':11 'a':3A 'budd':8B 'carter':10C 'four':4A 'get':9C 'is':2A 'letter':5A 'love':1A 'pl':16 'roy':7B 'set':15 'spelling':14 'themes':13 'word':6A
                                    'tag_tracknum'  17
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'easy listening', 'soundtrack', 'soundtracks', 'funk']
                                        'tag_date'  1971
                                     'discogstags'  ['easy listening', 'soundtrack', 'soul-jazz', 'jazz-funk', 'funk', 'theme', 'jazz', 'funk / soul', 'stage & screen']

============================== file details ==============================
                                           'mtime'  1620356397.2731438  (2021-05-07 04:59:57)
                             'size'  3858482