======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '275'
                                          'artist'  'All That Remains'
                                     'text_people'  'All That Remains'
                                         'release'  'Behind Silence and Solitude'
                                           'title'  'From These Wounds'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-4', 'q-grit-4', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['death metal', 'metal', 'melodic metalcore', 'metalcore', 'hardcore', "
 "'melodic death metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'eid-metal-death-melodic'
                                             'bpm'  '102'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'GEOB:CREAF_LCID'                                   GEOB(encoding=<Encoding.LATIN1: 0>, mime='text/plain', filename='', desc='CREAF_LCID', data=b'0')
'GEOB:CT_CUSTOM'                                    GEOB(encoding=<Encoding.LATIN1: 0>, mime='text/plain', filename='', desc='CT_CUSTOM', data=b'')
'GEOB:CT_MY_RATING'                                 GEOB(encoding=<Encoding.LATIN1: 0>, mime='text/plain', filename='', desc='CT_MY_RATING', data=b'')
'PRIV:AverageLevel:{\x1e\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x1e\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 \x005\x008\x000\x007\x006\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x005\x002\x005\x000\x008\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x005\x004\x003\x004\x007\x005\x009\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x005\x008\x000\x007\x006\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x005\x002\x005\x000\x008\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x005\x004\x003\x004\x007\x005\x009\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:^ð\x7f\x9e¸æÚF¯\x82\x15¿hà÷j'  PRIV(owner='WM/WMCollectionGroupID', data=b'^\xf0\x7f\x9e\xb8\xe6\xdaF\xaf\x82\x15\xbfh\xe0\xf7j')
'PRIV:WM/WMCollectionID:^ð\x7f\x9e¸æÚF¯\x82\x15¿hà÷j'  PRIV(owner='WM/WMCollectionID', data=b'^\xf0\x7f\x9e\xb8\xe6\xdaF\xaf\x82\x15\xbfh\xe0\xf7j')
'PRIV:WM/WMContentID:\x87Äh\x87\x96®|G\x95Ê\x1bÊ\x12fÜÓ'  PRIV(owner='WM/WMContentID', data=b'\x87\xc4h\x87\x96\xae|G\x95\xca\x1b\xca\x12f\xdc\xd3')
'TALB' (Album/Movie/Show title)                     'Behind Silence and Solitude'
'TBPM' (BPM (beats per minute))                     '102'
'TCOM' (Composer)                                   'All That Remains'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death-melodic'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'From These Wounds'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'All That Remains'
'TPE2' (Band/orchestra/accompaniment)               'All That Remains'
'TPUB' (Publisher)                                  'Metal Blade'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['death metal',
 'metal',
 'melodic metalcore',
 'metalcore',
 'hardcore',
 'melodic death metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.66 dB'
'TXXX:replaygain_track_peak'                        '0.392425'

========================== row from database ==========================
                                              'id'  1392879
                                            'path'  /data/Music/Bulk/00dwimp/00metal/All That Remains/Behind Silence and Solitude/All That Remains-Behind Silence and Solitude-From These Wounds.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  275
                                           'genre'  eid-metal-death-melodic
                                        'filesize'  6637334
                                           'mtime'  1620301282
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal eid metal death melodic
                                      'tag_artist'  All That Remains
                                     'tag_release'  Behind Silence and Solitude
                                       'tag_title'  From These Wounds
                                             'bpm'  102.0
                                    'search_title'  'from':1 'these':2 'wounds':3
                                   'search_artist'  'all':1 'remains':3 'that':2
                                  'search_release'  'and':3 'behind':1 'silence':2 'solitude':4
                                     'search_rest'  '00dwimp':1 '00metal':2 'death':5 'eid':3 'melodic':6 'metal':4
                                    'search_combo'  '00dwimp':11 '00metal':12 'all':4B 'and':9C 'behind':7C 'death':15 'eid':13 'from':1A 'melodic':16 'metal':14 'remains':6B 'silence':8C 'solitude':10C 'that':5B 'these':2A 'wounds':3A
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['death metal', 'metal', 'melodic metalcore', 'metalcore', 'hardcore', 'melodic death metal']
                                        'tag_date'  2002
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301282.3108096  (2021-05-06 13:41:22)
                             'size'  6637334