======================== unified (from filesystem) ========================
                                         'bitrate'  '96.0'
                                        'duration'  '215'
                                          'artist'  'Cannibal Corpse'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Pulverized'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['metal', 'grindcore', 'american', 'death metal', 'brutal death metal']"
                                     'discogstags'  "['death metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '125.2'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'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')
'TBPM' (BPM (beats per minute))                     '125.2'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Pulverized'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Cannibal Corpse'
'TRCK' (Track number/Position in set)               '04'
'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'                                  ['death metal', 'rock']
'TXXX:lastfmtags'                                   ['metal', 'grindcore', 'american', 'death metal', 'brutal death metal']
'TXXX:other'                                        'Cannibal Corpse'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'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'                        '-1.78 dB'
'TXXX:replaygain_track_peak'                        '0.597718'

========================== row from database ==========================
                                              'id'  1398890
                                            'path'  /data/Music/Bulk/00dwimp/00metal/00death/Cannibal Corpse - The Bleeding/Cannibal Corpse - 04 Pulverized.mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  215
                                           'genre'  eid-metal-death
                                        'filesize'  2590218
                                           'mtime'  1620301683
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 00death The Bleeding 04 eid metal death
                                      'tag_artist'  Cannibal Corpse
                                     'tag_release'  None
                                       'tag_title'  Pulverized
                                             'bpm'  125.2
                                    'search_title'  'pulverized':1
                                   'search_artist'  'cannibal':1 'corpse':2
                                  'search_release'  
                                     'search_rest'  '00death':3 '00dwimp':1 '00metal':2 'bleeding':5 'death':8 'eid':6 'metal':7 'the':4
                                    'search_combo'  '00death':6 '00dwimp':4 '00metal':5 'bleeding':8 'cannibal':2B 'corpse':3B 'death':11 'eid':9 'metal':10 'pulverized':1A 'the':7
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  3A
                                           '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-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['metal', 'grindcore', 'american', 'death metal', 'brutal death metal']
                                        'tag_date'  2005
                                     'discogstags'  ['death metal', 'rock']

============================== file details ==============================
                                           'mtime'  1620301682.7766273  (2021-05-06 13:48:02)
                             'size'  2590218