======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '303'
                                          'artist'  'Iron Claw'
                                     'text_people'  'Iron Claw'
                                         'release'  'Iron Claw'
                                           'title'  'Sabotage'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-1', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', "
 "'Q-CHART-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['proto metal', 'heavy metal', 'hard rock', 'progressive rock', 'heavy psych']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '16'
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '137.5'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=255, count=0)
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'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')
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'PRIV:WM/WMCollectionID:\x17Âùqzv,O·;UÝ?½Ý\x1c'     PRIV(owner='WM/WMCollectionID', data=b'\x17\xc2\xf9qzv,O\xb7;U\xdd?\xbd\xdd\x1c')
'PRIV:WM/WMContentID:ZªX("\xa0¢E\x9bH$!D98\x90'     PRIV(owner='WM/WMContentID', data=b'Z\xaaX("\xa0\xa2E\x9bH$!D98\x90')
'TALB' (Album/Movie/Show title)                     'Iron Claw'
'TBPM' (BPM (beats per minute))                     '137.5'
'TCOM' (Composer)                                   'Iron Claw'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1970-74'
'TIT2' (Title/songname/content description)         'Sabotage'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Iron Claw'
'TPE2' (Band/orchestra/accompaniment)               'Iron Claw'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Rockadrome'
'TRCK' (Track number/Position in set)               '3/16'
'TXXX:AccurateRipDiscID'                            'ccurateRipDiscID'
'TXXX:AccurateRipResult'                            'ccurateRipResult'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '1'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['proto metal', 'heavy metal', 'hard rock', 'progressive rock', 'heavy psych']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-3.71 dB'
'TXXX:replaygain_track_peak'                        '0.976334'

========================== row from database ==========================
                                              'id'  1478619
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/iron claw/iron claw - 03 - sabotage - 5.03.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  303
                                           'genre'  rock-cppex
                                        'filesize'  9713746
                                           'mtime'  1636921698
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy iron claw iron claw 03 sabotage 5.03 rock cppex
                                      'tag_artist'  Iron Claw
                                     'tag_release'  Iron Claw
                                       'tag_title'  Sabotage
                                             'bpm'  137.5
                                    'search_title'  'sabotage':1
                                   'search_artist'  'claw':2 'iron':1
                                  'search_release'  'claw':2 'iron':1
                                     'search_rest'  '03':6 '5':5 '503':7 'classicprogpsy':1 'claw':3 'cppex':9 'iron':2 'rock':8 'sabotage':4
                                    'search_combo'  '03':11 '5':10 '503':12 'classicprogpsy':6 'claw':3B,5C,8 'cppex':14 'iron':2B,4C,7 'rock':13 'sabotage':1A,9
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-1', 'q-drums-3', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['proto metal', 'heavy metal', 'hard rock', 'progressive rock', 'heavy psych']
                                        'tag_date'  1970
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636921697.717398  (2021-11-14 21:28:17)
                             'size'  9713746