======================== unified (from filesystem) ========================
                                         'bitrate'  '181.367'
                                        'duration'  '124'
                                          'artist'  'the advantage'
                                     'text_people'  ''
                                         'release'  'the advantage'
                                           'title'  'castlevania 3, epitaph'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['video game music', 'instrumental', 'indie', 'nintendocore', 'math rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-rock;set-th-novelty-styledcovers;set-cover or covered'
                                             'bpm'  '145.5'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:¬\x10\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xac\x10\x00\x00')
'PRIV:PeakValue:Ò{\x00\x00'                         PRIV(owner='PeakValue', data=b'\xd2{\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')
'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 \x006\x008\x004\x002\x003\x006\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x006\x004\x007\x000\x004\x005\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x006\x009\x004\x003\x006\x009\x007\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x006\x008\x004\x002\x003\x006\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x006\x004\x007\x000\x004\x005\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x006\x009\x004\x003\x006\x009\x007\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:Ú¸ÒÆs/\x00C\x99FË\x19\x15#\x835'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xda\xb8\xd2\xc6s/\x00C\x99F\xcb\x19\x15#\x835')
'PRIV:WM/WMCollectionID:Ú¸ÒÆs/\x00C\x99FË\x19\x15#\x835'  PRIV(owner='WM/WMCollectionID', data=b'\xda\xb8\xd2\xc6s/\x00C\x99F\xcb\x19\x15#\x835')
'PRIV:WM/WMContentID:\x0fÏ\x80·