======================== unified (from filesystem) ========================
                                         'bitrate'  '268.335'
                                        'duration'  '4073'
                                          'artist'  'Nikhil Banerjee'
                                     'text_people'  ''
                                         'release'  "Musician's Musician II"
                                           'title'  'Shyam Kalyan'
                                           'quals'  ("['Q-OLDST-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['sitar', 'world', 'indian classical', 'hindustani', 'indian']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '132.3'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Musician's Musician II"
'TBPM' (BPM (beats per minute))                     '132.3'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TDRC' (Recording time)                             '1997'
'TENC' (Encoded by)                                 'M.03.07.15-3'
'TIT2' (Title/songname/content description)         'Shyam Kalyan'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nikhil Banerjee'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['sitar', 'world', 'indian classical', 'hindustani', 'indian']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.19 dB'
'TXXX:replaygain_track_peak'                        '1.242838'

========================== row from database ==========================
                                              'id'  1532396
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Musician_s Musician/disc 2/Nikhil Banerjee - 02 - Shyam Kalyan (CD 2).mp3
                                         'working'  None
                                         'bitrate'  268
                                    'duration_sec'  4073
                                           'genre'  loc-unsorted
                                        'filesize'  136642436
                                           'mtime'  1620399972
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Musician_s disc 2 02 (CD 2) loc unsorted
                                      'tag_artist'  Nikhil Banerjee
                                     'tag_release'  Musician's Musician II
                                       'tag_title'  Shyam Kalyan
                                             'bpm'  132.3
                                    'search_title'  'kalyan':2 'shyam':1
                                   'search_artist'  'banerjee':2 'nikhil':1
                                  'search_release'  'ii':5 'musician':1,4 'musicians':3 's':2
                                     'search_rest'  '2':4,7 'cd':5,6 'disc':3 'loc':8 'musician':1 's':2 'unsorted':9
                                    'search_combo'  '2':13,16 'banerjee':4B 'cd':14,15 'disc':12 'ii':9C 'kalyan':2A 'loc':17 'musician':5C,8C,10 'musicians':7C 'nikhil':3B 's':6C,11 'shyam':1A 'unsorted':18
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['sitar', 'world', 'indian classical', 'hindustani', 'indian']
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620399971.510771  (2021-05-07 17:06:11)
                             'size'  136642436