======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '154'
                                          'artist'  'Henry Mancini'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Love Theme From 'romeo & Juliet' (영화 '로미오와 줄리엣' 러브 테마)"
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-4', 'q-vocals-2', 'q-mixbeat-1', 'Q-PIANO-3']")
                                      'lastfmtags'  "['soundtrack', 'instrumental', 'lounge', 'jazz', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '005'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'prerock-jb'
                                             'bpm'  '132.271'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '132.271'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         "Love Theme From 'romeo & Juliet' (영화 '로미오와 줄리엣' 러브 테마)"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Henry Mancini'
'TPE2' (Band/orchestra/accompaniment)               'Henry Mancini'
'TRCK' (Track number/Position in set)               '005'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['soundtrack', 'instrumental', 'lounge', 'jazz', 'easy listening']
'TXXX:other'                                        '가인아 놀자 (밥송 041집)'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.15 dB'
'TXXX:replaygain_track_peak'                        '0.428736'

========================== row from database ==========================
                                              'id'  1497107
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/가인아 놀자 (밥송 041집) - ♬ 005 Henry Mancini - Love Theme From _romeo & Juliet_ (영화 _로미오와 줄리엣_ 러브 테마).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  154
                                           'genre'  prerock-jb
                                        'filesize'  3715722
                                           'mtime'  1630249724
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 가인아 놀자 (밥송 041집) ♬ 005 _romeo Juliet_ _로미오와 줄리엣_ prerock jb
                                      'tag_artist'  Henry Mancini
                                     'tag_release'  None
                                       'tag_title'  Love Theme From 'romeo & Juliet' (영화 '로미오와 줄리엣' 러브 테마)
                                             'bpm'  132.271
                                    'search_title'  'from':3 'juliet':6,7 'love':1 'romeo':4,5 'theme':2 '러브':20,21 '로미오와':12,13,14,15 '영화':8,9,10,11 '줄리엣':16,17,18,19 '테마':22,23,24,25
                                   'search_artist'  'henry':1 'mancini':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '041집':15,16,17,18 'files':5,6 'jb':26 'juliet':20 'loose':3,4 'prerock':25 'romeo':19 'unsorted':2 '가인아':7,8 '놀자':9,10 '로미오와':21,22 '밥송':11,12,13,14 '줄리엣':23,24
                                    'search_combo'  '00poprockelectronic':28 '041집':42,43,44,45 'files':32,33 'from':3A 'henry':26B 'jb':53 'juliet':6A,7A,47 'loose':30,31 'love':1A 'mancini':27B 'prerock':52 'romeo':4A,5A,46 'theme':2A 'unsorted':29 '가인아':34,35 '놀자':36,37 '러브':20A,21A '로미오와':12A,13A,14A,15A,48,49 '밥송':38,39,40,41 '영화':8A,9A,10A,11A '줄리엣':16A,17A,18A,19A,50,51 '테마':22A,23A,24A,25A
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['soundtrack', 'instrumental', 'lounge', 'jazz', 'easy listening']
                                        'tag_date'  2008
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1630249724.050767  (2021-08-29 17:08:44)
                             'size'  3715722