======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '445'
                                          'artist'  'Job For A Cowboy'
                                     'text_people'  ''
                                         'release'  'Demo'
                                           'title'  'Day In Black'
                                           'quals'  ("['Q-HAP-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-UNU-2', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['metalcore', 'grindcore', 'death metal', 'deathcore', 'technical death "
 "metal']")
                                     'discogstags'  "['death metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-unsorted'
                                             'bpm'  '139.1'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 000014E8 0000112A 0000703D 00004068 0001FC15 0001FC15 00008000 00008000 '
 '000138C5 0001ADF5')
'PRIV:AverageLevel:{\x1c\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x1c\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)                     'Demo'
'TBPM' (BPM (beats per minute))                     '139.1'
'TCON' (Content type, a.k.a. Genre)                 'eid-unsorted'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Day In Black'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Job For A Cowboy'
'TRCK' (Track number/Position in set)               '3'
'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'                                  ['death metal', 'rock']
'TXXX:lastfmtags'                                   ['metalcore', 'grindcore', 'death metal', 'deathcore', 'technical death metal']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+17.72 dB'
'TXXX:replaygain_track_peak'                        '0.049438'

========================== row from database ==========================
                                              'id'  1305625
                                            'path'  /data/Music/Bulk/00poprockelectronic/Job For A Cowboy/Demo/Job For A Cowboy-Day In Black.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  445
                                           'genre'  eid-unsorted
                                        'filesize'  10683992
                                           'mtime'  1620521249
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic eid unsorted
                                      'tag_artist'  Job For A Cowboy
                                     'tag_release'  Demo
                                       'tag_title'  Day In Black
                                             'bpm'  139.1
                                    'search_title'  'black':3 'day':1 'in':2
                                   'search_artist'  'a':3 'cowboy':4 'for':2 'job':1
                                  'search_release'  'demo':1
                                     'search_rest'  '00poprockelectronic':1 'eid':2 'unsorted':3
                                    'search_combo'  '00poprockelectronic':9 'a':6B 'black':3A 'cowboy':7B 'day':1A 'demo':8C 'eid':10 'for':5B 'in':2A 'job':4B 'unsorted':11
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['metalcore', 'grindcore', 'death metal', 'deathcore', 'technical death metal']
                                        'tag_date'  2004
                                     'discogstags'  ['death metal', 'rock']

============================== file details ==============================
                                           'mtime'  1620521248.5937932  (2021-05-09 02:47:28)
                             'size'  10683992