======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '254'
                                          'artist'  'Emm Gryner'
                                     'text_people'  'Emm Gryner'
                                         'release'  'Public'
                                           'title'  'The End'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'singer songwriter', 'female vocalists', 'pop', 'canadian']"
                                     'discogstags'  "['rock', 'folk rock', 'acoustic', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-pop'
                                             'bpm'  '110.362'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'C\x00+\x009\x006\x00+\x005\x005\x004\x003\x00+\x009\x00A\x006\x007\x00+\x00D\x00E\x00D\x00C\x00+\x001\x002\x00C\x007\x008\x00+\x001\x007\x00D\x003\x003\x00+\x001\x00D\x00F\x009\x00C\x00+\x002\x001\x00E\x007\x00D\x00+\x002\x006\x007\x006\x009\x00+\x002\x00B\x002\x001\x009\x00+\x002\x00F\x006\x008\x009\x00+\x003\x004\x001\x006\x00B\x00+\x003\x008\x004\x00F\x00A\x00\x00\x00')
'PRIV:AverageLevel:{\x1a\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x1a\x00\x00')
'PRIV:PeakValue:¡w\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1w\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 \x003\x005\x002\x008\x008\x008\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x002\x009\x004\x006\x008\x009\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x006\x000\x000\x003\x005\x009\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x003\x005\x002\x008\x008\x008\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x002\x009\x004\x006\x008\x009\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x006\x000\x000\x003\x005\x009\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:!\x8cª\\4\x97÷D\x8bÙ\x04+ò\x80\x86\x07'  PRIV(owner='WM/WMCollectionGroupID', data=b'!\x8c\xaa\\4\x97\xf7D\x8b\xd9\x04+\xf2\x80\x86\x07')
'PRIV:WM/WMCollectionID:!\x8cª\\4\x97÷D\x8bÙ\x04+ò\x80\x86\x07'  PRIV(owner='WM/WMCollectionID', data=b'!\x8c\xaa\\4\x97\xf7D\x8b\xd9\x04+\xf2\x80\x86\x07')
'PRIV:WM/WMContentID:S7,÷éí\x1dK¨\x92}q&¦\x06\x05'  PRIV(owner='WM/WMContentID', data=b'S7,\xf7\xe9\xed\x1dK\xa8\x92}q&\xa6\x06\x05')
'TALB' (Album/Movie/Show title)                     'Public'
'TBPM' (BPM (beats per minute))                     '110.362'
'TCOM' (Composer)                                   'Emm Gryner'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-pop'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'The End'
'TKEY' (Initial key)                                '3B'
'TLEN' (Length)                                     '254933'
'TPE1' (Lead performer(s)/Soloist(s))               'Emm Gryner'
'TPE2' (Band/orchestra/accompaniment)               'Emm Gryner'
'TPUB' (Publisher)                                  'Mercury'
'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:discogstags'                                  ['rock', 'folk rock', 'acoustic', 'indie rock']
'TXXX:lastfmtags'                                   ['indie', 'singer songwriter', 'female vocalists', 'pop', 'canadian']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.05 dB'
'TXXX:replaygain_track_peak'                        '0.443500'

========================== row from database ==========================
                                              'id'  183083
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Emm Gryner/Public/09 The End.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  254
                                           'genre'  ifs-songwriter-pop
                                        'filesize'  6163804
                                           'mtime'  1622762351
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 09 ifs songwriter pop
                                      'tag_artist'  Emm Gryner
                                     'tag_release'  Public
                                       'tag_title'  The End
                                             'bpm'  110.362
                                    'search_title'  'end':2 'the':1
                                   'search_artist'  'emm':1 'gryner':2
                                  'search_release'  'public':1
                                     'search_rest'  '00singer':1 'eos':3 'ifs':4 'pop':5 'songwriter':2
                                    'search_combo'  '00singer':6 'emm':3B 'end':2A 'eos':8 'gryner':4B 'ifs':9 'pop':10 'public':5C 'songwriter':7 'the':1A
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['indie', 'singer songwriter', 'female vocalists', 'pop', 'canadian']
                                        'tag_date'  1998
                                     'discogstags'  ['rock', 'folk rock', 'acoustic', 'indie rock']

============================== file details ==============================
                                           'mtime'  1622762351.3773644  (2021-06-04 01:19:11)
                             'size'  6163804