======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '909'
                                          'artist'  'Bandish In Rupaktaal'
                                     'text_people'  ''
                                         'release'  'Sangeet Sartaj Vol 1'
                                           'title'  'Raga Des'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '3'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-asia-india-classical'
                                             'bpm'  '139.370'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 00000099 000000A3 00000EA6'
'COMM:iTunNORM:eng'                                 (' 00000099 000000A3 00000EA6 00000AC9 0007D758 000C8FB6 0000445F 000042C0 '
 '00086D24 000CA024')
'COMM:iTunes_CDDB_IDs:eng'                          '3+51B1C23703C18B55F203B2B2D8F163DB+4108970'
'TALB' (Album/Movie/Show title)                     'Sangeet Sartaj Vol 1'
'TBPM' (BPM (beats per minute))                     '139.370'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-india-classical'
'TENC' (Encoded by)                                 'iTunes v4.7.1'
'TIT2' (Title/songname/content description)         'Raga Des'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bandish In Rupaktaal'
'TPOS' (Part of a set)                              '1/2'
'TRCK' (Track number/Position in set)               '3/3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.53 dB'
'TXXX:replaygain_track_peak'                        '0.899828'

========================== row from database ==========================
                                              'id'  1398855
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Sangeet Sartaj - Vol 1 & 2/Vol. 1/1-03 Raga Des.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  909
                                           'genre'  loc-asia-india-classical
                                        'filesize'  21827179
                                           'mtime'  1621627000
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia & 2 Vol. 03 loc asia india classical
                                      'tag_artist'  Bandish In Rupaktaal
                                     'tag_release'  Sangeet Sartaj Vol 1
                                       'tag_title'  Raga Des
                                             'bpm'  139.37
                                    'search_title'  'des':2 'raga':1
                                   'search_artist'  'bandish':1 'in':2 'rupaktaal':3
                                  'search_release'  '1':4 'sangeet':1 'sartaj':2 'vol':3
                                     'search_rest'  '00asia':1 '2':2 'asia':6 'classical':8 'india':7 'loc':5 'vol':3,4
                                    'search_combo'  '00asia':10 '1':9C '2':11 'asia':15 'bandish':3B 'classical':17 'des':2A 'in':4B 'india':16 'loc':14 'raga':1A 'rupaktaal':5B 'sangeet':6C 'sartaj':7C 'vol':8C,12,13
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621626999.9543436  (2021-05-21 21:56:39)
                             'size'  21827179