======================== unified (from filesystem) ========================
                                         'bitrate'  '272.175'
                                        'duration'  '180'
                                          'artist'  'In Flames'
                                     'text_people'  ''
                                         'release'  'Come Clarity'
                                           'title'  "Pacing Death's Trail"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['swedish', 'death metal', 'melodic death metal', 'metal', 'swedish metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '133.228'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:m+\x00\x00'                      PRIV(owner='AverageLevel', data=b'm+\x00\x00')
'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')
'TALB' (Album/Movie/Show title)                     'Come Clarity'
'TBPM' (BPM (beats per minute))                     '133.228'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         "Pacing Death's Trail"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'In Flames'
'TRCK' (Track number/Position in set)               '8'
'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', 'death metal', 'melodic death metal', 'metal', 'swedish metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'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'                        '-1.70 dB'
'TXXX:replaygain_track_peak'                        '0.333454'

========================== row from database ==========================
                                              'id'  1392895
                                            'path'  /data/Music/Bulk/00dwimp/00metal/In Flames/Come clarity/08-in_flames-pacing_deaths_trail.mp3
                                         'working'  None
                                         'bitrate'  272
                                    'duration_sec'  180
                                           'genre'  eid-metal-death
                                        'filesize'  6149225
                                           'mtime'  1620301988
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal clarity 08 in_flames pacing_deaths_trail eid metal death
                                      'tag_artist'  In Flames
                                     'tag_release'  Come Clarity
                                       'tag_title'  Pacing Death's Trail
                                             'bpm'  133.228
                                    'search_title'  'death':2 'deaths':4 'pacing':1 's':3 'trail':5
                                   'search_artist'  'flames':2 'in':1
                                  'search_release'  'clarity':2 'come':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'clarity':3 'death':11 'deaths':7 'eid':9 'flames':5 'in':4 'metal':10 'pacing':6 'trail':8
                                    'search_combo'  '00dwimp':10 '00metal':11 'clarity':9C,12 'come':8C 'death':2A,20 'deaths':4A,16 'eid':18 'flames':7B,14 'in':6B,13 'metal':19 'pacing':1A,15 's':3A 'trail':5A,17
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  6A
                                           '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-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['swedish', 'death metal', 'melodic death metal', 'metal', 'swedish metal']
                                        'tag_date'  2006
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301987.612642  (2021-05-06 13:53:07)
                             'size'  6149225