======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '371'
                                          'artist'  'Alka Yagnik & Udit Narayan'
                                     'text_people'  ''
                                         'release'  'Bollywood for the Skeptical'
                                           'title'  'Taal Se Taal'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-3', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', "
 "'q-play-2', 'Q-JZFKS-1', 'Q-OLDST-1', 'q-chart-2', 'q-drums-4', 'q-other-2', "
 "'q-piano-1', 'q-vocals-3', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-4']")
                                      'lastfmtags'  "['bollywood', 'hindi', 'indian', 'desi', 'evergreen love songs']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '18'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-asia-india'
                                             'bpm'  '95.080'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 000002DC 00000334 0000124A 00'
'COMM:iTunNORM:eng'                                 (' 000002DC 00000334 0000124A 00001119 00044605 00053065 00007E23 000072A5 '
 '00053065 00024A35')
'TALB' (Album/Movie/Show title)                     'Bollywood for the Skeptical'
'TBPM' (BPM (beats per minute))                     '95.080'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-india'
'TFLT' (File type)                                  '/3'
'TIT2' (Title/songname/content description)         'Taal Se Taal'
'TKEY' (Initial key)                                '6A'
'TMED' (Media type)                                 '(CD/DD)'
'TPE1' (Lead performer(s)/Soloist(s))               'Alka Yagnik & Udit Narayan'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '18'
'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:lastfmtags'                                   ['bollywood', 'hindi', 'indian', 'desi', 'evergreen love songs']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.24 dB'
'TXXX:replaygain_track_peak'                        '0.920115'

========================== row from database ==========================
                                              'id'  789424
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Lounge/Bollywood for the Skeptical/18 - Taal Se Taal.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  371
                                           'genre'  loc-asia-india
                                        'filesize'  5943434
                                           'mtime'  1621626190
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Lounge 18 loc asia india
                                      'tag_artist'  Alka Yagnik & Udit Narayan
                                     'tag_release'  Bollywood for the Skeptical
                                       'tag_title'  Taal Se Taal
                                             'bpm'  95.08
                                    'search_title'  'se':2 'taal':1
                                   'search_artist'  'alka':1 'narayan':4 'udit':3 'yagnik':2
                                  'search_release'  'bollywood':1 'for':2 'skeptical':4 'the':3
                                     'search_rest'  '18':6 'asia':8 'country':4 'exotica':2 'india':9 'jazz':1 'loc':7 'lounge':5 'oldies':3
                                    'search_combo'  '18':16 'alka':3B 'asia':18 'bollywood':7C 'country':14 'exotica':12 'for':8C 'india':19 'jazz':11 'loc':17 'lounge':15 'narayan':6B 'oldies':13 'se':2A 'skeptical':10C 'taal':1A 'the':9C 'udit':5B 'yagnik':4B
                                    'tag_tracknum'  18
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-4', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['bollywood', 'hindi', 'indian', 'desi', 'evergreen love songs']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621626190.1597605  (2021-05-21 21:43:10)
                             'size'  5943434