======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '275'
                                          'artist'  'Soundtrack'
                                     'text_people'  'Edward Elgar'
                                         'release'  'Clockwork Orange'
                                           'title'  'Pomp And Circumstance March No. I (Elgar)'
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-2', 'q-busy-2', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'alternative', 'ost', 'soundtracks']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '84.455'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'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')
'PRIV:WM/Provider:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x001\x000\x009\x009\x003\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00M\x00S\x00T\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x005\x004\x000\x008\x009\x000\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x001\x000\x009\x009\x003\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00M\x00S\x00T\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x005\x004\x000\x008\x009\x000\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x84\x06\x8bé\x93³AO\x86O\x17¾åY\x01J'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x84\x06\x8b\xe9\x93\xb3AO\x86O\x17\xbe\xe5Y\x01J')
'PRIV:WM/WMCollectionID:\x84\x06\x8bé\x93³AO\x86O\x17¾åY\x01J'  PRIV(owner='WM/WMCollectionID', data=b'\x84\x06\x8b\xe9\x93\xb3AO\x86O\x17\xbe\xe5Y\x01J')
'PRIV:WM/WMContentID:Ç©Ú\x9a%