======================== unified (from filesystem) ========================
                                         'bitrate'  '221.507'
                                        'duration'  '102'
                                          'artist'  'Nanarland Radioblog'
                                     'text_people'  ''
                                         'release'  'Nanarland Radioblog'
                                           'title'  'Kamen Rider Sky 8 Riders Hit Medley (Radioblog Edit)'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-UNU-2', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'soundtrack-web'
                                             'bpm'  '143.5'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Nanarland Radioblog'
'TBPM' (BPM (beats per minute))                     '143.5'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-web'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Kamen Rider Sky 8 Riders Hit Medley (Radioblog Edit)'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nanarland Radioblog'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.44 dB'
'TXXX:replaygain_track_peak'                        '0.675670'

========================== row from database ==========================
                                              'id'  1371893
                                            'path'  /data/Music/Bulk/0soundtrack/Nanarland Radioblog/Kamen_Rider_Sky_8_Riders_Hit_Medley_(Radioblog_Edit).mp3
                                         'working'  None
                                         'bitrate'  221
                                    'duration_sec'  102
                                           'genre'  soundtrack-web
                                        'filesize'  2842621
                                           'mtime'  1620329152
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Kamen_Rider_Sky_8_Riders_Hit_Medley_(Radioblog_Edit) soundtrack web
                                      'tag_artist'  Nanarland Radioblog
                                     'tag_release'  Nanarland Radioblog
                                       'tag_title'  Kamen Rider Sky 8 Riders Hit Medley (Radioblog Edit)
                                             'bpm'  143.5
                                    'search_title'  '8':4 'edit':10,11 'hit':6 'kamen':1 'medley':7 'radioblog':8,9 'rider':2 'riders':5 'sky':3
                                   'search_artist'  'nanarland':1 'radioblog':2
                                  'search_release'  'nanarland':1 'radioblog':2
                                     'search_rest'  '0soundtrack':1 '8':5,14 'edit':10,19 'hit':7,16 'kamen':2,11 'medley':8,17 'radioblog':9,18 'rider':3,12 'riders':6,15 'sky':4,13 'soundtrack':20 'web':21
                                    'search_combo'  '0soundtrack':16 '8':4A,20,29 'edit':10A,11A,25,34 'hit':6A,22,31 'kamen':1A,17,26 'medley':7A,23,32 'nanarland':12B,14C 'radioblog':8A,9A,13B,15C,24,33 'rider':2A,18,27 'riders':5A,21,30 'sky':3A,19,28 'soundtrack':35 'web':36
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620329151.823542  (2021-05-06 21:25:51)
                             'size'  2842621