======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '132'
                                          'artist'  'At The Gates'
                                     'text_people'  ''
                                         'release'  'Slaughter Of The Soul'
                                           'title'  'Into The Dead Sky'
                                           '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-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['swedish', 'metal', 'melodic death metal', 'death metal', 'gothenburg metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '126.806'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:PeakValue:"~\x00\x00'                         PRIV(owner='PeakValue', data=b'"~\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')
'TALB' (Album/Movie/Show title)                     'Slaughter Of The Soul'
'TBPM' (BPM (beats per minute))                     '126.806'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Into The Dead Sky'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'At The Gates'
'TRCK' (Track number/Position in set)               '5'
'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'                                  'rock'
'TXXX:lastfmtags'                                   ['swedish', 'metal', 'melodic death metal', 'death metal', 'gothenburg metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.84 dB'
'TXXX:replaygain_track_peak'                        '0.696820'

========================== row from database ==========================
                                              'id'  1396022
                                            'path'  /data/Music/Bulk/00dwimp/00metal/At the gates/Slaughter of the soul [2002 release]/05 - into the dead sky.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  132
                                           'genre'  eid-metal-death
                                        'filesize'  3186560
                                           'mtime'  1620301844
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal the gates of the soul [2002 release] 05 into the dead sky eid metal death
                                      'tag_artist'  At The Gates
                                     'tag_release'  Slaughter Of The Soul
                                       'tag_title'  Into The Dead Sky
                                             'bpm'  126.806
                                    'search_title'  'dead':3 'into':1 'sky':4 'the':2
                                   'search_artist'  'at':1 'gates':3 'the':2
                                  'search_release'  'of':2 'slaughter':1 'soul':4 'the':3
                                     'search_rest'  '00dwimp':1 '00metal':2 '2002':7,8 'dead':12 'death':16 'eid':14 'gates':4 'into':11 'metal':15 'of':5 'release':9,10 'sky':13 'soul':6 'the':3
                                    'search_combo'  '00dwimp':12 '00metal':13 '2002':18,19 'at':5B 'dead':3A,23 'death':27 'eid':25 'gates':7B,15 'into':1A,22 'metal':26 'of':9C,16 'release':20,21 'sky':4A,24 'slaughter':8C 'soul':11C,17 'the':2A,6B,10C,14
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['swedish', 'metal', 'melodic death metal', 'death metal', 'gothenburg metal']
                                        'tag_date'  2002
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301844.0673847  (2021-05-06 13:50:44)
                             'size'  3186560