======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '395'
                                          'artist'  'The Prodigy'
                                     'text_people'  'Liam Howlett'
                                         'release'  'The Fat of the Land'
                                           'title'  'Climbatize'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['industrial', 'dance', 'techno', 'electronic', 'electronica']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-bigbeat'
                                             'bpm'  '86.034'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 00000F5E 00000F71 00005D67'
'COMM:iTunNORM:eng'                                 (' 00000F5E 00000F71 00005D67 000062AF 000589DE 0001EA3F 00008000 00008000 '
 '00017825 00017899')
'MCDI' (Music CD identifier)                        MCDI(data=b'A\x00+\x009\x006\x00+\x006\x005\x009\x00A\x00+\x00C\x008\x004\x006\x00+\x001\x001\x004\x003\x00D\x00+\x001\x007\x000\x00E\x000\x00+\x001\x00C\x00C\x000\x00C\x00+\x002\x003\x000\x00A\x000\x00+\x002\x00D\x000\x005\x00F\x00+\x003\x002\x003\x004\x00F\x00+\x003\x009\x007\x009\x004\x00+\x003\x00E\x003\x00D\x00C\x00\x00\x00')
'PRIV:AverageLevel:{(\x00\x00'                      PRIV(owner='AverageLevel', data=b'{(\x00\x00')
'PRIV:PeakValue:¡\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xa1\x7f\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 \x002\x007\x008\x000\x002\x006\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x002\x006\x008\x007\x001\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x007\x005\x001\x001\x003\x005\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x002\x007\x008\x000\x002\x006\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x002\x006\x008\x007\x001\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x007\x005\x001\x001\x003\x005\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:ª\x87vðFã)C§\xadÛÆ\x95P\x18\x04'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xaa\x87v\xf0F\xe3)C\xa7\xad\xdb\xc6\x95P\x18\x04')
'PRIV:WM/WMCollectionID:ª\x87vðFã)C§\xadÛÆ\x95P\x18\x04'  PRIV(owner='WM/WMCollectionID', data=b'\xaa\x87v\xf0F\xe3)C\xa7\xad\xdb\xc6\x95P\x18\x04')
'PRIV:WM/WMContentID:\x94ï\x96«+\x02ªM\x86\x16Q@\nC\x82\x05'  PRIV(owner='WM/WMContentID', data=b'\x94\xef\x96\xab+\x02\xaaM\x86\x16Q@\nC\x82\x05')
'TALB' (Album/Movie/Show title)                     'The Fat of the Land'
'TBPM' (BPM (beats per minute))                     '86.034'
'TCOM' (Composer)                                   'Liam Howlett'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-bigbeat'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'Climbatize'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '396866'
'TPE1' (Lead performer(s)/Soloist(s))               'The Prodigy'
'TPE2' (Band/orchestra/accompaniment)               'The Prodigy'
'TPUB' (Publisher)                                  'Sony'
'TRCK' (Track number/Position in set)               '9'
'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:lastfmtags'                                   ['industrial', 'dance', 'techno', 'electronic', 'electronica']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.42 dB'
'TXXX:replaygain_track_peak'                        '0.482222'

========================== row from database ==========================
                                              'id'  1320046
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/Prodigy/09 climbatize.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  395
                                           'genre'  electronic-generic or radio-bigbeat
                                        'filesize'  6338582
                                           'mtime'  1621696699
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted 09 climbatize electronic generic or radio bigbeat
                                      'tag_artist'  The Prodigy
                                     'tag_release'  The Fat of the Land
                                       'tag_title'  Climbatize
                                             'bpm'  86.034
                                    'search_title'  'climbatize':1
                                   'search_artist'  'prodigy':2 'the':1
                                  'search_release'  'fat':2 'land':4 'of':3 'the':1
                                     'search_rest'  '00poprockelectronic':1 'bigbeat':8 'climbatize':3 'electronic':4 'generic':5 'or':6 'radio':7 'unsorted':2
                                    'search_combo'  '00poprockelectronic':8 'bigbeat':15 'climbatize':1A,10 'electronic':11 'fat':5C 'generic':12 'land':7C 'of':6C 'or':13 'prodigy':3B 'radio':14 'the':2B,4C 'unsorted':9
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['industrial', 'dance', 'techno', 'electronic', 'electronica']
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696699.2019649  (2021-05-22 17:18:19)
                             'size'  6338582