======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '334'
                                          'artist'  'Europe'
                                     'text_people'  ''
                                         'release'  'Europe'
                                           'title'  'The King Will Return'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['80s', 'classic rock', 'hair metal', 'hard rock', 'rock']"
                                     'discogstags'  "['trance', 'techno', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '9'
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'rock-gr-hard'
                                             'bpm'  '105.974'
                                             'key'  '8A'
                                        'acoustid'  '7ea6ba82-90be-427a-8f3b-8ce92511fb35'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Europe'
'TBPM' (BPM (beats per minute))                     '105.974'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-hard'
'TDOR' (Original release time)                      '1983'
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'The King Will Return'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Europe'
'TPE2' (Band/orchestra/accompaniment)               'Europe'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Epic'
'TRCK' (Track number/Position in set)               '4/9'
'TSO2'                                              'Europe'
'TSOP' (Performer sort order)                       'Europe'
'TXXX:Acoustid Id'                                  '7ea6ba82-90be-427a-8f3b-8ce92511fb35'
'TXXX:BARCODE'                                      '07464450932'
'TXXX:CATALOGNUMBER'                                'EK 45093'
'TXXX:MusicBrainz Album Artist Id'                  'ccfe7a3c-1a45-4984-a8d0-644549cefe61'
'TXXX:MusicBrainz Album Id'                         '0ea5f20f-a376-4333-8fcb-f8e29064f32b'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'ccfe7a3c-1a45-4984-a8d0-644549cefe61'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['trance', 'techno', 'electronic']
'TXXX:lastfmtags'                                   ['80s', 'classic rock', 'hair metal', 'hard rock', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.36 dB'
'TXXX:replaygain_track_peak'                        '0.919078'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'10077920-1571-48fb-bf72-e32344f5a662')

========================== row from database ==========================
                                              'id'  1337318
                                            'path'  /data/Music/Bulk/00dwimp/Europe/Europe/Europe - The king will return.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  334
                                           'genre'  rock-gr-hard
                                        'filesize'  5360713
                                           'mtime'  1622757774
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp king will return rock gr hard
                                      'tag_artist'  Europe
                                     'tag_release'  Europe
                                       'tag_title'  The King Will Return
                                             'bpm'  105.974
                                    'search_title'  'king':2 'return':4 'the':1 'will':3
                                   'search_artist'  'europe':1
                                  'search_release'  'europe':1
                                     'search_rest'  '00dwimp':1 'gr':6 'hard':7 'king':2 'return':4 'rock':5 'will':3
                                    'search_combo'  '00dwimp':7 'europe':5B,6C 'gr':12 'hard':13 'king':2A,8 'return':4A,10 'rock':11 'the':1A 'will':3A,9
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'classic rock', 'hair metal', 'hard rock', 'rock']
                                        'tag_date'  1989
                                     'discogstags'  ['trance', 'techno', 'electronic']

============================== file details ==============================
                                           'mtime'  1622757773.9485395  (2021-06-04 00:02:53)
                             'size'  5360713