======================== unified (from filesystem) ========================
                                         'bitrate'  '251.49'
                                        'duration'  '931'
                                          'artist'  'Nikhil Banerjee'
                                     'text_people'  ''
                                         'release'  "India's Maestro of Melody, Live Concert vol. 6 "
                                           'title'  'Khambaj in thumri style'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['sitar', 'world', 'indian classical', 'hindustani', 'indian']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  '03'
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'loc-asia-india'
                                             'bpm'  '114.285'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "India's Maestro of Melody, Live Concert vol. 6 "
'TBPM' (BPM (beats per minute))                     '114.285'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-india'
'TDRC' (Recording time)                             '1971'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Khambaj in thumri style'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nikhil Banerjee'
'TRCK' (Track number/Position in set)               '03/03'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['sitar', 'world', 'indian classical', 'hindustani', 'indian']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.86 dB'
'TXXX:replaygain_track_peak'                        '0.989644'

========================== row from database ==========================
                                              'id'  731655
                                            'path'  /data/Music/Bulk/00localcharacter/Nikhil Banerjee/Live Concert vol. 6/03-Khambaj in thumri style.mp3
                                         'working'  None
                                         'bitrate'  251
                                    'duration_sec'  931
                                           'genre'  loc-asia-india
                                        'filesize'  29296674
                                           'mtime'  1621629754
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 03 loc asia india
                                      'tag_artist'  Nikhil Banerjee
                                     'tag_release'  India's Maestro of Melody, Live Concert vol. 6 
                                       'tag_title'  Khambaj in thumri style
                                             'bpm'  114.285
                                    'search_title'  'in':2 'khambaj':1 'style':4 'thumri':3
                                   'search_artist'  'banerjee':2 'nikhil':1
                                  'search_release'  '6':12 'concert':9 'india':1 'indias':3 'live':8 'maestro':4 'melody':6,7 'of':5 's':2 'vol':10,11
                                     'search_rest'  'asia':2 'india':3 'loc':1
                                    'search_combo'  '6':18C 'asia':20 'banerjee':6B 'concert':15C 'in':2A 'india':7C,21 'indias':9C 'khambaj':1A 'live':14C 'loc':19 'maestro':10C 'melody':12C,13C 'nikhil':5B 'of':11C 's':8C 'style':4A 'thumri':3A 'vol':16C,17C
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['sitar', 'world', 'indian classical', 'hindustani', 'indian']
                                        'tag_date'  1971
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629753.6017582  (2021-05-21 22:42:33)
                             'size'  29296674