======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '254'
                                          'artist'  'John Williams'
                                     'text_people'  ''
                                         'release'  'The Phantom Menace'
                                           'title'  'Duel of the Fates'
                                           '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-3', "
 "'q-chart-3', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['soundtrack', 'instrumental', 'composers', 'classical', 'star wars']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '145.9'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Phantom Menace'
'TBPM' (BPM (beats per minute))                     '145.9'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TIT2' (Title/songname/content description)         'Duel of the Fates'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'John Williams'
'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'                                   ['soundtrack', 'instrumental', 'composers', 'classical', 'star wars']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.65 dB'
'TXXX:replaygain_track_peak'                        '0.681495'

========================== row from database ==========================
                                              'id'  1213727
                                            'path'  /data/Music/Bulk/00instruments-classical/John Williams/John_Willams_-_Duel_of_the_Fates.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  254
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  4075275
                                           'mtime'  1620561589
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical John_Willams_ _Duel_of_the_Fates prerock classical or classical instruments
                                      'tag_artist'  John Williams
                                     'tag_release'  The Phantom Menace
                                       'tag_title'  Duel of the Fates
                                             'bpm'  145.9
                                    'search_title'  'duel':1 'fates':4 'of':2 'the':3
                                   'search_artist'  'john':1 'williams':2
                                  'search_release'  'menace':3 'phantom':2 'the':1
                                     'search_rest'  '00instruments':1 'classical':2 'duel':5 'fates':8 'instruments':11 'john':3 'of':6 'or':10 'prerock':9 'the':7 'willams':4
                                    'search_combo'  '00instruments':10 'classical':11 'duel':1A,14 'fates':4A,17 'instruments':20 'john':5B,12 'menace':9C 'of':2A,15 'or':19 'phantom':8C 'prerock':18 'the':3A,7C,16 'willams':13 'williams':6B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['soundtrack', 'instrumental', 'composers', 'classical', 'star wars']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561589.0652323  (2021-05-09 13:59:49)
                             'size'  4075275