======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '197'
                                          'artist'  'Charanjit Singh'
                                     'text_people'  'Rahul Dev Burman'
                                         'release'  'Instrumental Film Tunes'
                                           'title'  'Dulhan Maike Chali (Film Manoranjan)'
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                                      'lastfmtags'  "['acid house', 'acid', 'electronic', 'experimental', 'disco']"
                                     'discogstags'  ("['easy listening', 'instrumental', 'jazz', 'latin', 'funk / soul', 'blues', "
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '10'
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'loc-asia-india'
                                             'bpm'  '100.906'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

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'COMM:ID3v1 Comment:XXX'                            ' 000008FA 00000C86 00002706'
'COMM:iTunNORM:eng'                                 (' 000008FA 00000C86 00002706 0000402C 0000796D 00006B58 0000538F 00005ED7 '
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'COMM:iTunPGAP:eng'                                 '0/'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000AB0 0000000000852CC0 00000000 00486D3A 00000000 '
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'TALB' (Album/Movie/Show title)                     'Instrumental Film Tunes'
'TBPM' (BPM (beats per minute))                     '100.906'
'TCOM' (Composer)                                   'Rahul Dev Burman'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-india'
'TDOR' (Original release time)                      '1974'
'TDRC' (Recording time)                             '1974'
'TENC' (Encoded by)                                 'iTunes 11.1.1'
'TIT2' (Title/songname/content description)         'Dulhan Maike Chali (Film Manoranjan)'
'TKEY' (Initial key)                                '7B'
'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'Charanjit Singh'
'TPE2' (Band/orchestra/accompaniment)               'Charanjit Singh'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Odeon'
'TRCK' (Track number/Position in set)               '4/10'
'TSO2'                                              'Singh, Charanjit'
'TSOP' (Performer sort order)                       'Singh, Charanjit'
'TXXX:CATALOGNUMBER'                                'S/MOCE.4204'
'TXXX:MusicBrainz Album Artist Id'                  'e52b6000-7cee-42d0-af6c-771cf42a7c49'
'TXXX:MusicBrainz Album Id'                         'ae35addf-5374-4e4d-8b0f-7cb2f654af82'
'TXXX:MusicBrainz Album Release Country'            'IN'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['easy listening',
 'instrumental',
 'jazz',
 'latin',
 'funk / soul',
 'blues',
 'folk, world, & country']
'TXXX:lastfmtags'                                   ['acid house', 'acid', 'electronic', 'experimental', 'disco']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.30 dB'
'TXXX:replaygain_track_peak'                        '0.432697'
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========================== row from database ==========================
                                              'id'  926070
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Charanjit Singh - Instrumental Film Tunes (1974)/04 Dulhan Maike Chali - Transicord (Manoranjan).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  197
                                           'genre'  loc-asia-india
                                        'filesize'  5742759
                                           'mtime'  1621629132
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia (1974) 04 Transicord (Manoranjan) loc asia india
                                      'tag_artist'  Charanjit Singh
                                     'tag_release'  Instrumental Film Tunes
                                       'tag_title'  Dulhan Maike Chali (Film Manoranjan)
                                             'bpm'  100.906
                                    'search_title'  'chali':3 'dulhan':1 'film':4,5 'maike':2 'manoranjan':6,7
                                   'search_artist'  'charanjit':1 'singh':2
                                  'search_release'  'film':2 'instrumental':1 'tunes':3
                                     'search_rest'  '00asia':1 '1974':2,3 'asia':8 'india':9 'loc':7 'manoranjan':5,6 'transicord':4
                                    'search_combo'  '00asia':13 '1974':14,15 'asia':20 'chali':3A 'charanjit':8B 'dulhan':1A 'film':4A,5A,11C 'india':21 'instrumental':10C 'loc':19 'maike':2A 'manoranjan':6A,7A,17,18 'singh':9B 'transicord':16 'tunes':12C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-4', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['acid house', 'acid', 'electronic', 'experimental', 'disco']
                                        'tag_date'  1974
                                     'discogstags'  ['easy listening', 'instrumental', 'jazz', 'latin', 'funk / soul', 'blues', 'folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621629132.2474337  (2021-05-21 22:32:12)
                             'size'  5742759