======================== unified (from filesystem) ========================
                                         'bitrate'  '203.704'
                                        'duration'  '320'
                                          'artist'  'Zakir Hussain, Sultan Khan & Bill Laswell'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'track 06'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-m'
                                             'bpm'  '109.764'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '109.764'
'TCON' (Content type, a.k.a. Genre)                 'loc-m'
'TIT2' (Title/songname/content description)         'track 06'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Zakir Hussain, Sultan Khan & Bill Laswell'
'TRCK' (Track number/Position in set)               '0'
'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'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.56 dB'
'TXXX:replaygain_track_peak'                        '0.996600'

========================== row from database ==========================
                                              'id'  926972
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/Tabla Beat Science/Zakir Hussain/Zakir Hussain, Sultan Khan & Bill Laswell/zakir hussain, sultan khan, bill laswell, et. al. - track 06.mp3
                                         'working'  None
                                         'bitrate'  203
                                    'duration_sec'  320
                                           'genre'  loc-m
                                        'filesize'  8171392
                                           'mtime'  1620526605
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east Tabla Beat Science zakir hussain, sultan khan, bill laswell, et. al. loc m
                                      'tag_artist'  Zakir Hussain, Sultan Khan & Bill Laswell
                                     'tag_release'  None
                                       'tag_title'  track 06
                                             'bpm'  109.764
                                    'search_title'  'track':1
                                   'search_artist'  'bill':6 'hussain':2,3 'khan':5 'laswell':7 'sultan':4 'zakir':1
                                  'search_release'  
                                     'search_rest'  '00south':1 'al':19,20 'beat':6 'bill':14 'east':4 'et':17,18 'europe':2 'hussain':9,10 'khan':12,13 'laswell':15,16 'loc':21 'm':22 'middle':3 'science':7 'sultan':11 'tabla':5 'zakir':8
                                    'search_combo'  '00south':9 'al':27,28 'beat':14 'bill':7B,22 'east':12 'et':25,26 'europe':10 'hussain':3B,4B,17,18 'khan':6B,20,21 'laswell':8B,23,24 'loc':29 'm':30 'middle':11 'science':15 'sultan':5B,19 'tabla':13 'track':1A 'zakir':2B,16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10B
                                           '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-2', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526604.9990733  (2021-05-09 04:16:44)
                             'size'  8171392