======================== unified (from filesystem) ========================
                                         'bitrate'  '291.906'
                                        'duration'  '303'
                                          'artist'  'See-Saw'
                                     'text_people'  ''
                                         'release'  '.hack//Sign OST 1'
                                           'title'  'the world'
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['j pop', 'female vocalists', 'japanese', 'soundtrack', 'anime', 'jpop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '130.063'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '.hack//Sign OST 1'
'TBPM' (BPM (beats per minute))                     '130.063'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video'
'TIT2' (Title/songname/content description)         'the world'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'See-Saw'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['j pop', 'female vocalists', 'japanese', 'soundtrack', 'anime', 'jpop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.11 dB'
'TXXX:replaygain_track_peak'                        '0.384578'

========================== row from database ==========================
                                              'id'  923156
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Yuki Kajiura/Hack__Hack Sign OST 1__cifs9a17.mp3
                                         'working'  None
                                         'bitrate'  291
                                    'duration_sec'  303
                                           'genre'  soundtrack-video
                                        'filesize'  11073309
                                           'mtime'  1620331747
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia Yuki Kajiura Hack__Hack 1__cifs9a17 soundtrack video
                                      'tag_artist'  See-Saw
                                     'tag_release'  .hack//Sign OST 1
                                       'tag_title'  the world
                                             'bpm'  130.063
                                    'search_title'  'the':1 'world':2
                                   'search_artist'  'saw':2 'see':1 'seesaw':3
                                  'search_release'  '1':5 'hack':1 'hacksign':3 'ost':4 'sign':2
                                     'search_rest'  '00asia':1 '1':6 'cifs9a17':7 'hack':4,5 'kajiura':3 'soundtrack':8 'video':9 'yuki':2
                                    'search_combo'  '00asia':11 '1':10C,16 'cifs9a17':17 'hack':6C,14,15 'hacksign':8C 'kajiura':13 'ost':9C 'saw':4B 'see':3B 'seesaw':5B 'sign':7C 'soundtrack':18 'the':1A 'video':19 'world':2A 'yuki':12
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['j pop', 'female vocalists', 'japanese', 'soundtrack', 'anime', 'jpop']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620331746.5033278  (2021-05-06 22:09:06)
                             'size'  11073309