======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '312'
                                          'artist'  'The Prodigy'
                                     'text_people'  ''
                                         'release'  'Invaders Must Die'
                                           'title'  "Warrior's Dance"
                                           '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']"
                                     'discogstags'  "['electronic', 'breaks', 'big beat']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-bigbeat'
                                             'bpm'  '137.013'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'Cleaned by TuneUp!'
'COMM:ID3v1 Comment:XXX'                            'Cleaned by TuneUp!'
'COMM:iTunNORM:eng'                                 (' 000014B6 000014C4 0000E287 0000A9E8 0001331E 000460E8 00008000 00008000 '
 '0000E74A 0000E07D')
'MCDI' (Music CD identifier)                        MCDI(data=b'B\x00+\x009\x006\x00+\x005\x007\x000\x005\x00+\x009\x006\x004\x00F\x00+\x00D\x00F\x006\x007\x00+\x001\x001\x00C\x004\x00F\x00+\x001\x005\x00C\x00D\x006\x00+\x001\x00B\x008\x008\x006\x00+\x002\x000\x006\x001\x004\x00+\x002\x002\x00D\x006\x002\x00+\x002\x008\x002\x007\x006\x00+\x002\x00C\x00A\x003\x005\x00+\x003\x002\x00A\x00E\x00B\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 \x001\x004\x006\x002\x005\x004\x005\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 \x001\x005\x005\x008\x004\x003\x008\x007\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x001\x004\x006\x002\x005\x004\x005\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 \x001\x005\x005\x008\x004\x003\x008\x007\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x8cùaDG\x85÷C¯\x08E\x1dXÈ\x95+'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x8c\xf9aDG\x85\xf7C\xaf\x08E\x1dX\xc8\x95+')
'PRIV:WM/WMCollectionID:\x8cùaDG\x85÷C¯\x08E\x1dXÈ\x95+'  PRIV(owner='WM/WMCollectionID', data=b'\x8c\xf9aDG\x85\xf7C\xaf\x08E\x1dX\xc8\x95+')
'PRIV:WM/WMContentID:øÚmcÐÖFB´å©Y÷\t\x0cæ'          PRIV(owner='WM/WMContentID', data=b'\xf8\xdamc\xd0\xd6FB\xb4\xe5\xa9Y\xf7\t\x0c\xe6')
'TALB' (Album/Movie/Show title)                     'Invaders Must Die'
'TBPM' (BPM (beats per minute))                     '137.013'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-bigbeat'
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         "Warrior's Dance"
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '312960'
'TPE1' (Lead performer(s)/Soloist(s))               'The Prodigy'
'TPE2' (Band/orchestra/accompaniment)               'The Prodigy'
'TPUB' (Publisher)                                  'Red Ink'
'TRCK' (Track number/Position in set)               '6'
'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:discogstags'                                  ['electronic', 'breaks', 'big beat']
'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'                        '-0.06 dB'
'TXXX:replaygain_track_peak'                        '0.386610'

========================== row from database ==========================
                                              'id'  1510957
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/Prodigy/06 warrior_s dance.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  312
                                           'genre'  electronic-generic or radio-bigbeat
                                        'filesize'  12553849
                                           'mtime'  1621696699
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted 06 warrior_s dance electronic generic radio bigbeat
                                      'tag_artist'  The Prodigy
                                     'tag_release'  Invaders Must Die
                                       'tag_title'  Warrior's Dance
                                             'bpm'  137.013
                                    'search_title'  'dance':4 's':2 'warrior':1 'warriors':3
                                   'search_artist'  'prodigy':2 'the':1
                                  'search_release'  'die':3 'invaders':1 'must':2
                                     'search_rest'  '00poprockelectronic':1 'bigbeat':9 'dance':5 'electronic':6 'generic':7 'radio':8 's':4 'unsorted':2 'warrior':3
                                    'search_combo'  '00poprockelectronic':10 'bigbeat':18 'dance':4A,14 'die':9C 'electronic':15 'generic':16 'invaders':7C 'must':8C 'prodigy':6B 'radio':17 's':2A,13 'the':5B 'unsorted':11 'warrior':1A,12 'warriors':3A
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  7B
                                           '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'  2009
                                     'discogstags'  ['electronic', 'breaks', 'big beat']

============================== file details ==============================
                                           'mtime'  1621696699.1747596  (2021-05-22 17:18:19)
                             'size'  12553849