======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '204'
                                          'artist'  'The String Quartet Tribute'
                                     'text_people'  ''
                                         'release'  'In The Chamber With Linkin Par'
                                           'title'  'Points Of Authority'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'classical', 'covers', 'orchestral', 'alternative']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '124.011'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'In The Chamber With Linkin Par'
'TBPM' (BPM (beats per minute))                     '124.011'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Points Of Authority'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'The String Quartet Tribute'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['instrumental', 'classical', 'covers', 'orchestral', 'alternative']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.67 dB'
'TXXX:replaygain_track_peak'                        '0.321010'

========================== row from database ==========================
                                              'id'  1298006
                                            'path'  /data/Music/Bulk/00instruments-classical/The String Quartet/Linkin Park/06-the_string_qartet_tribute-points_of_authority-qmb.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  204
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  4907782
                                           'mtime'  1620561805
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical Park 06 the_string_qartet_tribute points_of_authority qmb prerock classical classical instruments
                                      'tag_artist'  The String Quartet Tribute
                                     'tag_release'  In The Chamber With Linkin Par
                                       'tag_title'  Points Of Authority
                                             'bpm'  124.011
                                    'search_title'  'authority':3 'of':2 'points':1
                                   'search_artist'  'quartet':3 'string':2 'the':1 'tribute':4
                                  'search_release'  'chamber':3 'in':1 'linkin':5 'par':6 'the':2 'with':4
                                     'search_rest'  '00instruments':1 'authority':10 'classical':2 'instruments':13 'of':9 'park':3 'points':8 'prerock':12 'qartet':6 'qmb':11 'string':5 'the':4 'tribute':7
                                    'search_combo'  '00instruments':14 'authority':3A,23 'chamber':10C 'classical':15 'in':8C 'instruments':26 'linkin':12C 'of':2A,22 'par':13C 'park':16 'points':1A,21 'prerock':25 'qartet':19 'qmb':24 'quartet':6B 'string':5B,18 'the':4B,9C,17 'tribute':7B,20 'with':11C
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'classical', 'covers', 'orchestral', 'alternative']
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561805.0484054  (2021-05-09 14:03:25)
                             'size'  4907782