======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '251'
                                          'artist'  'Children of Bodom'
                                     'text_people'  ''
                                         'release'  'Hate Crew Deathroll (Limited)'
                                           'title'  "You're Better Off Dead"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-4', 'q-grit-4', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['death metal', 'melodic death metal', 'metal', 'finnish', 'power metal']"
                                     'discogstags'  "['melodic death metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '127.605'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\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')
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'PRIV:WM/WMCollectionGroupID:Ä\x88\x9e\xad\x07¾ê@¦2\r9|,ê¿'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xc4\x88\x9e\xad\x07\xbe\xea@\xa62\r9|,\xea\xbf')
'PRIV:WM/WMCollectionID:Ä\x88\x9e\xad\x07¾ê@¦2\r9|,ê¿'  PRIV(owner='WM/WMCollectionID', data=b'\xc4\x88\x9e\xad\x07\xbe\xea@\xa62\r9|,\xea\xbf')
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'TALB' (Album/Movie/Show title)                     'Hate Crew Deathroll (Limited)'
'TBPM' (BPM (beats per minute))                     '127.605'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         "You're Better Off Dead"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Children Of Bodom'
'TPE2' (Band/orchestra/accompaniment)               'Children of Bodom'
'TRCK' (Track number/Position in set)               '7'
'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'                                  ['melodic death metal', 'rock']
'TXXX:lastfmtags'                                   ['death metal', 'melodic death metal', 'metal', 'finnish', 'power metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.61 dB'
'TXXX:replaygain_track_peak'                        '0.394976'

========================== row from database ==========================
                                              'id'  1270397
                                            'path'  /data/Music/Bulk/00dwimp/Children of Bodom/Hate crew deathroll/Children of Bodom - Hate Crew Deathroll - 07 -cob-youre_better_off_dead-ser.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  251
                                           'genre'  eid-metal-death
                                        'filesize'  6042745
                                           'mtime'  1620302108
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp crew deathroll 07 cob youre_better_off_dead ser eid metal death
                                      'tag_artist'  Children of Bodom
                                     'tag_release'  Hate Crew Deathroll (Limited)
                                       'tag_title'  You're Better Off Dead
                                             'bpm'  127.605
                                    'search_title'  'better':4 'dead':6 'off':5 're':2 'you':1 'youre':3
                                   'search_artist'  'bodom':3 'children':1 'of':2
                                  'search_release'  'crew':2 'deathroll':3 'hate':1 'limited':4,5
                                     'search_rest'  '00dwimp':1 'better':6 'cob':4 'crew':2 'dead':8 'death':12 'deathroll':3 'eid':10 'metal':11 'off':7 'ser':9 'youre':5
                                    'search_combo'  '00dwimp':15 'better':4A,20 'bodom':9B 'children':7B 'cob':18 'crew':11C,16 'dead':6A,22 'death':26 'deathroll':12C,17 'eid':24 'hate':10C 'limited':13C,14C 'metal':25 'of':8B 'off':5A,21 're':2A 'ser':23 'you':1A 'youre':3A,19
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['death metal', 'melodic death metal', 'metal', 'finnish', 'power metal']
                                        'tag_date'  2003
                                     'discogstags'  ['melodic death metal', 'rock']

============================== file details ==============================
                                           'mtime'  1620302107.788414  (2021-05-06 13:55:07)
                             'size'  6042745