======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '158'
                                          'artist'  'the beatles'
                                     'text_people'  'John Lennon/Paul McCartney'
                                         'release'  'Progsoup 30'
                                           'title'  'yellow submarine'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['pop', 'rock', 'british', '60s', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '57'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '110.362'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x00B\x00+\x009\x006\x00+\x002\x009\x00D\x001\x00+\x004\x00B\x00D\x009\x00+\x007\x005\x003\x005\x00+\x009\x00F\x00A\x00D\x00+\x00C\x006\x003\x009\x00+\x00F\x003\x002\x00C\x00+\x001\x001\x00B\x00B\x003\x00+\x001\x004\x00B\x00D\x00B\x00+\x001\x008\x003\x00A\x00D\x00+\x001\x00A\x00C\x005\x009\x00+\x001\x00D\x001\x001\x006\x00+\x002\x000\x002\x006\x00C\x00+\x002\x002\x00A\x000\x003\x00+\x002\x005\x002\x008\x00F\x00+\x002\x008\x000\x00F\x005\x00+\x002\x00A\x006\x001\x00D\x00+\x002\x00D\x00A\x00D\x002\x00+\x003\x001\x00D\x007\x008\x00+\x003\x005\x00A\x002\x007\x00+\x003\x008\x002\x004\x005\x00+\x003\x00F\x00E\x009\x00E\x00+\x004\x003\x006\x00E\x003\x00+\x004\x006\x00B\x007\x009\x00+\x004\x00A\x000\x008\x00F\x00+\x004\x00E\x00C\x004\x00B\x00+\x005\x002\x00F\x00E\x00B\x00+\x005\x006\x00F\x00B\x000\x00\x00\x00')
'PRIV:AverageLevel:d\x12\x00\x00'                   PRIV(owner='AverageLevel', data=b'd\x12\x00\x00')
'PRIV:PeakValue:\x08b\x00\x00'                      PRIV(owner='PeakValue', data=b'\x08b\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\x000\x004\x008\x009\x008\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x003\x006\x004\x004\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x004\x002\x008\x002\x001\x002\x006\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x005\x000\x004\x008\x009\x008\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x003\x006\x004\x004\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x004\x002\x008\x002\x001\x002\x006\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\r5DÅ*¯sA\x89H\x9a¹\x13á\x95~'  PRIV(owner='WM/WMCollectionGroupID', data=b'\r5D\xc5*\xafsA\x89H\x9a\xb9\x13\xe1\x95~')
'PRIV:WM/WMCollectionID:\r5DÅ*¯sA\x89H\x9a¹\x13á\x95~'  PRIV(owner='WM/WMCollectionID', data=b'\r5D\xc5*\xafsA\x89H\x9a\xb9\x13\xe1\x95~')
'PRIV:WM/WMContentID:·\x17q¿Ã¹\x1fE\x95äö\x96IZxº'  PRIV(owner='WM/WMContentID', data=b'\xb7\x17q\xbf\xc3\xb9\x1fE\x95\xe4\xf6\x96IZx\xba')
'TALB' (Album/Movie/Show title)                     'Progsoup 30'
'TBPM' (BPM (beats per minute))                     '110.362'
'TCOM' (Composer)                                   'John Lennon/Paul McCartney'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'yellow submarine'
'TKEY' (Initial key)                                '3A'
'TLEN' (Length)                                     '158373'
'TPE1' (Lead performer(s)/Soloist(s))               'the beatles'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Apple/Capitol'
'TRCK' (Track number/Position in set)               '57'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['pop', 'rock', 'british', '60s', 'classic rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+13.52 dB'
'TXXX:replaygain_track_peak'                        '0.095736'

========================== row from database ==========================
                                              'id'  1409932
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 30 (hitsoup)/1723 the beatles - yellow submarine.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  158
                                           'genre'  rock-cppex-progressive
                                        'filesize'  3940255
                                           'mtime'  1620737108
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP progsoup (hitsoup) 1723 rock cppex progressive
                                      'tag_artist'  the beatles
                                     'tag_release'  Progsoup 30
                                       'tag_title'  yellow submarine
                                             'bpm'  110.362
                                    'search_title'  'submarine':2 'yellow':1
                                   'search_artist'  'beatles':2 'the':1
                                  'search_release'  '30':2 'progsoup':1
                                     'search_rest'  '1723':5 'classicprogpsy':1 'cppex':7 'hitsoup':3,4 'progressive':8 'progsoup':2 'rock':6
                                    'search_combo'  '1723':11 '30':6C 'beatles':4B 'classicprogpsy':7 'cppex':13 'hitsoup':9,10 'progressive':14 'progsoup':5C,8 'rock':12 'submarine':2A 'the':3B 'yellow':1A
                                    'tag_tracknum'  57
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rock', 'british', '60s', 'classic rock']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737107.678034  (2021-05-11 14:45:07)
                             'size'  3940255