======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '198'
                                          'artist'  'At The Gates'
                                     'text_people'  ''
                                         'release'  'Slaughter Of The Soul (2002 rerelease)'
                                           'title'  'Dying (unreleased Track)'
                                           '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-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['swedish', 'metal', 'melodic death metal', 'death metal', 'gothenburg metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '145.476'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:\x02!\x00\x00'                   PRIV(owner='AverageLevel', data=b'\x02!\x00\x00')
'PRIV:PeakValue:Å|\x00\x00'                         PRIV(owner='PeakValue', data=b'\xc5|\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 (2002 rerelease)'
'TBPM' (BPM (beats per minute))                     '145.476'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Dying (unreleased Track)'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'At The Gates'
'TRCK' (Track number/Position in set)               '13'
'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'                                       '2'
'TXXX:q-busy'                                       '3'
'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'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.92 dB'
'TXXX:replaygain_track_peak'                        '0.344643'

========================== row from database ==========================
                                              'id'  1401276
                                            'path'  /data/Music/Bulk/00dwimp/00metal/At the gates/Slaughter of the soul [2002 release]/13 - dying (unreleased track).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  198
                                           'genre'  eid-metal-death
                                        'filesize'  4763648
                                           'mtime'  1620301850
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal the gates of the soul [2002 release] 13 dying track) eid metal death
                                      'tag_artist'  At The Gates
                                     'tag_release'  Slaughter Of The Soul (2002 rerelease)
                                       'tag_title'  Dying (unreleased Track)
                                             'bpm'  145.476
                                    'search_title'  'dying':1 'track':4,5 'unreleased':2,3
                                   'search_artist'  'at':1 'gates':3 'the':2
                                  'search_release'  '2002':5,6 'of':2 'rerelease':7,8 'slaughter':1 'soul':4 'the':3
                                     'search_rest'  '00dwimp':1 '00metal':2 '2002':7,8 'death':16 'dying':11 'eid':14 'gates':4 'metal':15 'of':5 'release':9,10 'soul':6 'the':3 'track':12,13
                                    'search_combo'  '00dwimp':17 '00metal':18 '2002':13C,14C,23,24 'at':6B 'death':32 'dying':1A,27 'eid':30 'gates':8B,20 'metal':31 'of':10C,21 'release':25,26 'rerelease':15C,16C 'slaughter':9C 'soul':12C,22 'the':7B,11C,19 'track':4A,5A,28,29 'unreleased':2A,3A
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-2', 'q-grit-4']
                                      'lastfmtags'  ['swedish', 'metal', 'melodic death metal', 'death metal', 'gothenburg metal']
                                        'tag_date'  1995
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301849.799374  (2021-05-06 13:50:49)
                             'size'  4763648