<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '180.329'
                                        'duration'  '225'
                                          'artist'  'Nintendo'
                                     'text_people'  'Koji Kondo'
                                         'release'  'Super Mario 64 OST'
                                           'title'  'Cave Dungeon'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['video game music', 'game music', 'soundtrack', 'game', 'video game']"
                                     'discogstags'  "['punk', 'indie rock', 'experimental', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  '36'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'soundtrack-game'
                                             'bpm'  '132.8'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f95382dac40>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1244454"/>
'APIC: '                                            type PictureType.COVER_BACK (Cover (back)) b' '<br/>                                     <img style="width:150px" src="image?fid=1244454"/>
'PRIV:AverageLevel:{\n\x00\x00'                     PRIV(owner='AverageLevel', data=b'{\n\x00\x00')
'PRIV:PeakValue:¡h\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1h\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Super Mario 64 OST'
'TBPM' (BPM (beats per minute))                     '132.8'
'TCOM' (Composer)                                   'Koji Kondo'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-game'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Cave Dungeon'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Koji Kondo'
'TPE2' (Band/orchestra/accompaniment)               'Nintendo'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '14/36'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['punk', 'indie rock', 'experimental', 'rock']
'TXXX:lastfmtags'                                   ['video game music', 'game music', 'soundtrack', 'game', 'video game']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.59 dB'
'TXXX:replaygain_track_peak'                        '0.819009'
'WXXX:'                                             WXXX(encoding=&lt;Encoding.UTF16: 1&gt;, desc='', url='sittingoncloudsost.com/ost')

========================== row from database ==========================
                                              'id'  1244454
                                            'path'  /data/Music/Bulk/0soundtrack/Nintendo - Super Mario 64 OST/14 Cave Dungeon.mp3
                                         'working'  None
                                         'bitrate'  180
                                    'duration_sec'  225
                                           'genre'  soundtrack-game
                                        'filesize'  9195741
                                           'mtime'  1623497889
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack 14 soundtrack game
                                      'tag_artist'  Nintendo
                                     'tag_release'  Super Mario 64 OST
                                       'tag_title'  Cave Dungeon
                                             'bpm'  132.8
                                    'search_title'  'cave':1 'dungeon':2
                                   'search_artist'  'nintendo':1
                                  'search_release'  '64':3 'mario':2 'ost':4 'super':1
                                     'search_rest'  '0soundtrack':1 'game':3 'soundtrack':2
                                    'search_combo'  '0soundtrack':8 '64':6C 'cave':1A 'dungeon':2A 'game':10 'mario':5C 'nintendo':3B 'ost':7C 'soundtrack':9 'super':4C
                                    'tag_tracknum'  14
                                      'num_images'  2
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['video game music', 'game music', 'soundtrack', 'game', 'video game']
                                        'tag_date'  1996
                                     'discogstags'  ['punk', 'indie rock', 'experimental', 'rock']

============================== file details ==============================
                                           'mtime'  1623497889.4791203  (2021-06-12 13:38:09)
                             'size'  9195741