======================== unified (from filesystem) ========================
                                         'bitrate'  '272.295'
                                        'duration'  '158'
                                          'artist'  'Dr. Steel'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'Glutton'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-OLDST-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-2', 'Q-SYN-3', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-2', 'q-bass-3', "
 "'Q-CHART-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['steampunk', 'industrial', 'industrial rock', 'hip-hop', 'crossover']"
                                     'discogstags'  "['industrial', 'electronic', 'hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '132.5'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'Amazon.com Song ID: 203327382'
'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 \x001\x004\x001\x000\x003\x008\x006\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x001\x000\x007\x004\x003\x007\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x001\x004\x005\x007\x009\x008\x009\x004\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x001\x004\x001\x000\x003\x008\x006\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x001\x000\x007\x004\x003\x007\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x001\x004\x005\x007\x009\x008\x009\x004\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:xXþ\x05Sx\x94B\x90Xr¡åK+¸'  PRIV(owner='WM/WMCollectionGroupID', data=b'xX\xfe\x05Sx\x94B\x90Xr\xa1\xe5K+\xb8')
'PRIV:WM/WMCollectionID:xXþ\x05Sx\x94B\x90Xr¡åK+¸'  PRIV(owner='WM/WMCollectionID', data=b'xX\xfe\x05Sx\x94B\x90Xr\xa1\xe5K+\xb8')
'PRIV:WM/WMContentID:§\x88\x83S\x08³ÐE\xa0â\x03|kLs\x87'  PRIV(owner='WM/WMContentID', data=b'\xa7\x88\x83S\x08\xb3\xd0E\xa0\xe2\x03|kLs\x87')
'PRIV:ZuneAlbumArtistMediaID:\x00\x10dÅ\x00\x06Û\x11\x89Ê\x00\x19¹*93'  PRIV(owner='ZuneAlbumArtistMediaID', data=b'\x00\x10d\xc5\x00\x06\xdb\x11\x89\xca\x00\x19\xb9*93')
'PRIV:ZuneAlbumMediaID:\x00Ò¿[\x00\x01Û\x11\x89Ê\x00\x19¹*93'  PRIV(owner='ZuneAlbumMediaID', data=b'\x00\xd2\xbf[\x00\x01\xdb\x11\x89\xca\x00\x19\xb9*93')
'PRIV:ZuneCollectionID:\xa0\x9a\x971iOwG\x9bJf£÷xØn'  PRIV(owner='ZuneCollectionID', data=b'\xa0\x9a\x971iOwG\x9bJf\xa3\xf7x\xd8n')
'PRIV:ZuneMediaID:\x00Ò¿i\x00\x01Û\x11\x89Ê\x00\x19¹*93'  PRIV(owner='ZuneMediaID', data=b'\x00\xd2\xbfi\x00\x01\xdb\x11\x89\xca\x00\x19\xb9*93')
'PRIV:ZuneUserEditedFields:\x04\x00\x00\x00'        PRIV(owner='ZuneUserEditedFields', data=b'\x04\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '132.5'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TCOP' (Copyright message)                          '2007 reapandsow, Inc.'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Glutton'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dr. Steel'
'TPE2' (Band/orchestra/accompaniment)               'Dr. Steel'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'World Domination'
'TRCK' (Track number/Position in set)               '7'
'TSOP' (Performer sort order)                       'Steel, Dr.'
'TXXX:ALBUMARTISTSORT'                              'LBUMARTIST'
'TXXX:Artists'                                      'Dr. Steel'
'TXXX:MusicBrainz Album Artist Id'                  'usicBrainz Album Artist Id'
'TXXX:MusicBrainz Album Id'                         'usicBrainz Album Id'
'TXXX:MusicBrainz Album Release Country'            'us'
'TXXX:MusicBrainz Album Status'                     'usicBrai'
'TXXX:MusicBrainz Album Type'                       'usicB'
'TXXX:MusicBrainz Artist Id'                        'b5fde337-9651-42e1-9651-9c44af5371b4'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['industrial', 'electronic', 'hip hop']
'TXXX:lastfmtags'                                   ['steampunk', 'industrial', 'industrial rock', 'hip-hop', 'crossover']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.11 dB'
'TXXX:replaygain_track_peak'                        '0.376424'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'0462f9b9-51dc-40fc-b986-acc759b0dc5d')

========================== row from database ==========================
                                              'id'  1489337
                                            'path'  /data/Music/Bulk/00dwimp/[2002] People of Earth/Dr. Steel-People of Earth-07-Glutton.mp3
                                         'working'  None
                                         'bitrate'  272
                                    'duration_sec'  158
                                           'genre'  electronic-unsorted
                                        'filesize'  5465952
                                           'mtime'  1637019819
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp [2002] People of Earth People of Earth 07 electronic unsorted
                                      'tag_artist'  Dr. Steel
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  Glutton
                                             'bpm'  132.5
                                    'search_title'  'glutton':1
                                   'search_artist'  'dr':1,2 'steel':3
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00dwimp':1 '2002':2,3 'earth':6 'electronic':7 'of':5 'people':4 'unsorted':8
                                    'search_combo'  '00dwimp':10 '2002':11,12 'album':6C 'dr':2B,3B 'earth':15 'electronic':16 'glutton':1A 'non':5C 'nonalbum':7C 'of':14 'people':13 'steel':4B 'tracks':8C,9C 'unsorted':17
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-3', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-3', 'Q-SYN-3', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3']
                                      'lastfmtags'  ['steampunk', 'industrial', 'industrial rock', 'hip-hop', 'crossover']
                                        'tag_date'  2002
                                     'discogstags'  ['industrial', 'electronic', 'hip hop']

============================== file details ==============================
                                           'mtime'  1637019818.761658  (2021-11-16 00:43:38)
                             'size'  5465952