======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '196'
                                          'artist'  'Tony Schwartz'
                                     'text_people'  ''
                                         'release'  'How To Record The Sound Of Children'
                                           'title'  'Stories About Your Child'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['ethnomusicology', 'animals', 'american', 'field recordings', 'sound art']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '1967'
                                        'comments'  ''
                                           'genre'  'nonmusic-speech;set-th-novelty'
                                             'bpm'  '132.7'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM::XXX'                                         '1'
'TALB' (Album/Movie/Show title)                     'How To Record The Sound Of Children'
'TBPM' (BPM (beats per minute))                     '132.7'
'TCON' (Content type, a.k.a. Genre)                 ['nonmusic-speech', 'set-th-novelty']
'TIT2' (Title/songname/content description)         'Stories About Your Child'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tony Schwartz'
'TPE2' (Band/orchestra/accompaniment)               'Tony Schwartz'
'TRCK' (Track number/Position in set)               '04'
'TXXX:DATE'                                         '1967'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['ethnomusicology', 'animals', 'american', 'field recordings', 'sound art']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.82 dB'
'TXXX:replaygain_track_peak'                        '0.757687'

========================== row from database ==========================
                                              'id'  731741
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/tony schwartz - records the sound of children (folkways, 1967)/04 - stories about your child.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  196
                                           'genre'  nonmusic-speech;set-th-novelty
                                        'filesize'  6295424
                                           'mtime'  1637329899
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm tony schwartz records the sound of children (folkways, 1967) 04 stories about your child nonmusic speech;set th novelty
                                      'tag_artist'  Tony Schwartz
                                     'tag_release'  How To Record The Sound Of Children
                                       'tag_title'  Stories About Your Child
                                             'bpm'  132.7
                                    'search_title'  'about':2 'child':4 'stories':1 'your':3
                                   'search_artist'  'schwartz':2 'tony':1
                                  'search_release'  'children':7 'how':1 'of':6 'record':3 'sound':5 'the':4 'to':2
                                     'search_rest'  '1967':10,11 'about':13 'child':15 'children':7 'folkways':8,9 'nonmusic':16 'novelty':22 'of':6 'records':3 'schwartz':2 'set':18,20 'sound':5 'speech':17,19 'stories':12 'th':21 'the':4 'tony':1 'your':14
                                    'search_combo'  '1967':23,24 'about':2A,26 'child':4A,28 'children':13C,20 'folkways':21,22 'how':7C 'nonmusic':29 'novelty':35 'of':12C,19 'record':9C 'records':16 'schwartz':6B,15 'set':31,33 'sound':11C,18 'speech':30,32 'stories':1A,25 'th':34 'the':10C,17 'to':8C 'tony':5B,14 'your':3A,27
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['ethnomusicology', 'animals', 'american', 'field recordings', 'sound art']
                                        'tag_date'  1967
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637329898.8851438  (2021-11-19 14:51:38)
                             'size'  6295424