======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '256'
                                          'artist'  'Fear Factory'
                                     'text_people'  ''
                                         'release'  'Digimortal'
                                           'title'  'Machine Debaser'
                                           '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-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['industrial metal', 'industrial', 'metal', 'death metal', 'thrash metal', "
 "'industrial death metal']")
                                     'discogstags'  "['rock', 'industrial']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '80'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00001517 00001F77 000042B2 00007811 00035B77 00024A1E 00008000 00008000 '
 '00002727 00002727')
'PRIV:AverageLevel:{\x16\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x16\x00\x00')
'PRIV:PeakValue:¡\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xa1\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')
'TALB' (Album/Movie/Show title)                     'Digimortal'
'TBPM' (BPM (beats per minute))                     '80'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Machine Debaser'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '256000'
'TPE1' (Lead performer(s)/Soloist(s))               'Fear Factory'
'TRCK' (Track number/Position in set)               '2'
'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', 'industrial']
'TXXX:lastfmtags'                                   ['industrial metal',
 'industrial',
 'metal',
 'death metal',
 'thrash metal',
 'industrial death metal']
'TXXX:original release date'                        ['2001', '2001']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.60 dB'
'TXXX:replaygain_track_peak'                        '0.459282'

========================== row from database ==========================
                                              'id'  1393766
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Fear Factory/Digimortal/Fear Factory-Machine Debaser.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  256
                                           'genre'  eid-metal-death
                                        'filesize'  4098441
                                           'mtime'  1620301946
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal eid metal death
                                      'tag_artist'  Fear Factory
                                     'tag_release'  Digimortal
                                       'tag_title'  Machine Debaser
                                             'bpm'  80.0
                                    'search_title'  'debaser':2 'machine':1
                                   'search_artist'  'factory':2 'fear':1
                                  'search_release'  'digimortal':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'death':5 'eid':3 'metal':4
                                    'search_combo'  '00dwimp':6 '00metal':7 'death':10 'debaser':2A 'digimortal':5C 'eid':8 'factory':4B 'fear':3B 'machine':1A 'metal':9
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['industrial metal', 'industrial', 'metal', 'death metal', 'thrash metal', 'industrial death metal']
                                        'tag_date'  2001
                                     'discogstags'  ['rock', 'industrial']

============================== file details ==============================
                                           'mtime'  1620301946.0966783  (2021-05-06 13:52:26)
                             'size'  4098441