======================== unified (from filesystem) ========================
                                         'bitrate'  '174.471'
                                        'duration'  '188'
                                          'artist'  'Pankaj Mullick'
                                     'text_people'  ''
                                         'release'  "Songs From New Theatres' Era"
                                           'title'  'Kahan Wo Bachpan Key'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['indian classical', 'india', 'composer', 'classical', 'pankaj mullick   "
 "guzar gaya woh zamana']")
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  '19'
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'loc-asia-india'
                                             'bpm'  '110.8'
                                             'key'  '11A'
                                        'acoustid'  '57ae9fbc-02c8-49ec-8bd8-b4a81e9db4a2'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     "Songs From New Theatres' Era"
'TBPM' (BPM (beats per minute))                     '110.8'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-india'
'TDOR' (Original release time)                      '1993'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'Kahan Wo Bachpan Key'
'TKEY' (Initial key)                                '11A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Pankaj Mullick'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Hindusthan Musical Products LTF'
'TRCK' (Track number/Position in set)               '13/19'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Mullick, Pankaj'
'TXXX:Acoustid Id'                                  '57ae9fbc-02c8-49ec-8bd8-b4a81e9db4a2'
'TXXX:Artists'                                      'Pankaj Mullick'
'TXXX:CATALOGNUMBER'                                'IP-6008'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         'bd6ae106-15fb-4fd0-9c12-4be3cf2d1ec6'
'TXXX:MusicBrainz Album Release Country'            'IN'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '887f6e52-5dbd-443c-8dc5-a264ef73c547'
'TXXX:MusicBrainz Release Group Id'                 '6ad4e8d6-d257-41a4-a349-de370afb6bed'
'TXXX:MusicBrainz Release Track Id'                 'f9a95df2-40b5-4d1a-abbc-41140065c487'
'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:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['indian classical',
 'india',
 'composer',
 'classical',
 'pankaj mullick   guzar gaya woh zamana']
'TXXX:originalyear'                                 '1993'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.50 dB'
'TXXX:replaygain_track_peak'                        '0.480380'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'144b7e8b-7d1f-4165-8aef-f001c86d180b')

========================== row from database ==========================
                                              'id'  1522551
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/v.a. - songs from the new theatres_ era/13 - pankaj kumar mullick - kahan wo bachpan key.mp3
                                         'working'  None
                                         'bitrate'  174
                                    'duration_sec'  188
                                           'genre'  loc-asia-india
                                        'filesize'  4195162
                                           'mtime'  1621626217
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm v.a. songs from the new theatres_ era 13 pankaj kumar mullick kahan wo bachpan key loc asia india
                                      'tag_artist'  Pankaj Mullick
                                     'tag_release'  Songs From New Theatres' Era
                                       'tag_title'  Kahan Wo Bachpan Key
                                             'bpm'  110.8
                                    'search_title'  'bachpan':3 'kahan':1 'key':4 'wo':2
                                   'search_artist'  'mullick':2 'pankaj':1
                                  'search_release'  'era':6 'from':2 'new':3 'songs':1 'theatres':4,5
                                     'search_rest'  'a':2 'asia':18 'bachpan':15 'era':9 'from':5 'india':19 'kahan':13 'key':16 'kumar':11 'loc':17 'mullick':12 'new':7 'pankaj':10 'songs':4 'the':6 'theatres':8 'v':1 'va':3 'wo':14
                                    'search_combo'  'a':14 'asia':30 'bachpan':3A,27 'era':12C,21 'from':8C,17 'india':31 'kahan':1A,25 'key':4A,28 'kumar':23 'loc':29 'mullick':6B,24 'new':9C,19 'pankaj':5B,22 'songs':7C,16 'the':18 'theatres':10C,11C,20 'v':13 'va':15 'wo':2A,26
                                    'tag_tracknum'  13
                                      'num_images'  1
                                             'key'  11A
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indian classical', 'india', 'composer', 'classical', 'pankaj mullick   guzar gaya woh zamana']
                                        'tag_date'  1993
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621626216.8238313  (2021-05-21 21:43:36)
                             'size'  4195162