======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '744'
                                          'artist'  'Dr. N. Rajam + Zakir Hussain'
                                     'text_people'  ''
                                         'release'  'The Enchanting Violin of Dr. N. Rajam'
                                           'title'  'Raga Chaya Nat, Gat in Roopak Tal, Teen Tal'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
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 "'q-chart-1', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-asia-india'
                                             'bpm'  '93'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'COMM:Media Jukebox: Intensity:\x00\x00\x00'        '1'
'COMM:Media Jukebox: Peak Level:\x00\x00\x00'       '0.96585'
'COMM:Media Jukebox: Replay Gain:\x00\x00\x00'      '-10.17494'
'COMM:Media Jukebox: Tool Name:\x00\x00\x00'        'Media Center'
'COMM:Media Jukebox: Tool Version:\x00\x00\x00'     '10.0.110'
'TALB' (Album/Movie/Show title)                     'The Enchanting Violin of Dr. N. Rajam'
'TBPM' (BPM (beats per minute))                     '93'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-india'
'TIT2' (Title/songname/content description)         'Raga Chaya Nat, Gat in Roopak Tal, Teen Tal'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Dr. N. Rajam + Zakir Hussain'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.09 dB'
'TXXX:replaygain_track_peak'                        '0.586240'

========================== row from database ==========================
                                              'id'  1402585
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/Dr. N. Rajam/The Enchanting Violin of Dr. N. Rajam/02 - raga chaya nat, gat in roopak tal, teen tal.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  744
                                           'genre'  loc-asia-india
                                        'filesize'  29779591
                                           'mtime'  1621629138
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia 02 raga chaya nat, gat roopak tal, teen tal loc asia india
                                      'tag_artist'  Dr. N. Rajam + Zakir Hussain
                                     'tag_release'  The Enchanting Violin of Dr. N. Rajam
                                       'tag_title'  Raga Chaya Nat, Gat in Roopak Tal, Teen Tal
                                             'bpm'  93.0
                                    'search_title'  'chaya':2 'gat':5 'in':6 'nat':3,4 'raga':1 'roopak':7 'tal':8,9 'teen':10
                                   'search_artist'  'dr':1,2 'hussain':7 'n':3,4 'rajam':5 'zakir':6
                                  'search_release'  'dr':5,6 'enchanting':2 'n':7,8 'of':4 'rajam':9 'the':1 'violin':3
                                     'search_rest'  '00asia':1 'asia':12 'chaya':3 'gat':6 'india':13 'loc':11 'nat':4,5 'raga':2 'roopak':7 'tal':8,9 'teen':10
                                    'search_combo'  '00asia':27 'asia':38 'chaya':2A,29 'dr':11B,12B,22C,23C 'enchanting':19C 'gat':5A,32 'hussain':17B 'in':6A 'india':39 'loc':37 'n':13B,14B,24C,25C 'nat':3A,4A,30,31 'of':21C 'raga':1A,28 'rajam':15B,26C 'roopak':7A,33 'tal':8A,9A,34,35 'teen':10A,36 'the':18C 'violin':20C 'zakir':16B
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629137.747675  (2021-05-21 22:32:17)
                             'size'  29779591