======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '262'
                                          'artist'  'Iron Claw'
                                     'text_people'  ''
                                         'release'  'Iron Claw'
                                           'title'  'Rock Band Blues'
                                           '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-3', "
 "'Q-CHART-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'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'  '7'
                                      'tracktotal'  '16'
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '135.7'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=255, count=0)
'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')
'TALB' (Album/Movie/Show title)                     'Iron Claw'
'TBPM' (BPM (beats per minute))                     '135.7'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1970-74'
'TIT2' (Title/songname/content description)         'Rock Band Blues'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Iron Claw'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '7/16'
'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'                                       '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-5.97 dB'
'TXXX:replaygain_track_peak'                        '0.937115'

========================== row from database ==========================
                                              'id'  1478015
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/iron claw/iron claw - 07 - rock band blues - 4.22.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  262
                                           'genre'  rock-cppex
                                        'filesize'  8411385
                                           'mtime'  1636921698
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy iron claw iron claw 07 rock band blues 4.22 rock cppex
                                      'tag_artist'  Iron Claw
                                     'tag_release'  Iron Claw
                                       'tag_title'  Rock Band Blues
                                             'bpm'  135.7
                                    'search_title'  'band':2 'blues':3 'rock':1
                                   'search_artist'  'claw':2 'iron':1
                                  'search_release'  'claw':2 'iron':1
                                     'search_rest'  '22':8 '4':7 '422':9 'band':5 'blues':6 'classicprogpsy':1 'claw':3 'cppex':10 'iron':2 'rock':4
                                    'search_combo'  '22':15 '4':14 '422':16 'band':2A,12 'blues':3A,13 'classicprogpsy':8 'claw':5B,7C,10 'cppex':17 'iron':4B,6C,9 'rock':1A,11
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3']
                                      'lastfmtags'  ['proto metal', 'heavy metal', 'hard rock', 'progressive rock', 'heavy psych']
                                        'tag_date'  1970
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636921698.4879642  (2021-11-14 21:28:18)
                             'size'  8411385