======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '298'
                                          'artist'  'Advent Sorrow'
                                     'text_people'  ''
                                         'release'  'New IV'
                                           'title'  'The Wraith In Silence'
                                           '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-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['black metal', 'symphonic black metal', 'depressive black metal', "
 "'symphonic death metal', 'blackened death metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  ''
                                            'date'  '2012'
                                        'comments'  ''
                                           'genre'  'eid-metal-symphonic'
                                             'bpm'  '142.708'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'New IV'
'TBPM' (BPM (beats per minute))                     '142.708'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-symphonic'
'TDRC' (Recording time)                             '2012'
'TIT2' (Title/songname/content description)         'The Wraith In Silence'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Advent Sorrow'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '02'
'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'                                   ['black metal',
 'symphonic black metal',
 'depressive black metal',
 'symphonic death metal',
 'blackened death metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.96 dB'
'TXXX:replaygain_track_peak'                        '0.462581'

========================== row from database ==========================
                                              'id'  1399333
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Metal Compilation - New IV/050.Advent Sorrow - The Wraith In Silence.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  298
                                           'genre'  eid-metal-symphonic
                                        'filesize'  4782622
                                           'mtime'  1620311617
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal Metal Compilation 050.Advent eid metal symphonic
                                      'tag_artist'  Advent Sorrow
                                     'tag_release'  New IV
                                       'tag_title'  The Wraith In Silence
                                             'bpm'  142.708
                                    'search_title'  'in':3 'silence':4 'the':1 'wraith':2
                                   'search_artist'  'advent':1 'sorrow':2
                                  'search_release'  'iv':2 'new':1
                                     'search_rest'  '00dwimp':1 '00metal':2 '050':5 '050advent':7 'advent':6 'compilation':4 'eid':8 'metal':3 'symphonic':9
                                    'search_combo'  '00dwimp':9 '00metal':10 '050':13 '050advent':15 'advent':5B,14 'compilation':12 'eid':16 'in':3A 'iv':8C 'metal':11 'new':7C 'silence':4A 'sorrow':6B 'symphonic':17 'the':1A 'wraith':2A
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['black metal', 'symphonic black metal', 'depressive black metal', 'symphonic death metal', 'blackened death metal']
                                        'tag_date'  2012
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620311617.4956486  (2021-05-06 16:33:37)
                             'size'  4782622