======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '994'
                                          'artist'  'T. Viswanathan'
                                     'text_people'  ''
                                         'release'  'South Indian Flute'
                                           'title'  'Raga Varali'
                                           '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-2', 'q-drums-4', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '5'
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'loc-asia-india'
                                             'bpm'  '107.664'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'vinyl rip'
'COMM:ID3v1 Comment:XXX'                            'vinyl rip'
'COMM:iTunNORM:eng'                                 (' 000000E9 000001AE 0000090B 00001782 00053065 0007532E 0000453E 0000521D '
 '000E09C0 000E09C0')
'TALB' (Album/Movie/Show title)                     'South Indian Flute'
'TBPM' (BPM (beats per minute))                     '107.664'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-india'
'TDRC' (Recording time)                             '1968'
'TIT2' (Title/songname/content description)         'Raga Varali'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'T. Viswanathan'
'TRCK' (Track number/Position in set)               '4/5'
'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'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.95 dB'
'TXXX:replaygain_track_peak'                        '0.954248'

========================== row from database ==========================
                                              'id'  1401842
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Viswanathan, Tanjore/South Indian Flute/04 Raga Varali.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  994
                                           'genre'  loc-asia-india
                                        'filesize'  23949694
                                           'mtime'  1621627015
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia Viswanathan, Tanjore 04 loc asia india
                                      'tag_artist'  T. Viswanathan
                                     'tag_release'  South Indian Flute
                                       'tag_title'  Raga Varali
                                             'bpm'  107.664
                                    'search_title'  'raga':1 'varali':2
                                   'search_artist'  't':1,2 'viswanathan':3
                                  'search_release'  'flute':3 'indian':2 'south':1
                                     'search_rest'  '00asia':1 'asia':6 'india':7 'loc':5 'tanjore':4 'viswanathan':2,3
                                    'search_combo'  '00asia':9 'asia':14 'flute':8C 'india':15 'indian':7C 'loc':13 'raga':1A 'south':6C 't':3B,4B 'tanjore':12 'varali':2A 'viswanathan':5B,10,11
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1968
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627015.3839781  (2021-05-21 21:56:55)
                             'size'  23949694