======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '193'
                                          'artist'  'Billy Cotton'
                                     'text_people'  ''
                                         'release'  'Regal Zonophone MR 2192'
                                           'title'  'Dandelion Daisy And Daffodil (vocal - Alan Breeze)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', '40s', 'wartime', 'swing']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1936'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '141.611'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Regal Zonophone MR 2192'
'TBPM' (BPM (beats per minute))                     '141.611'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1936'
'TIT2' (Title/songname/content description)         'Dandelion Daisy And Daffodil (vocal - Alan Breeze)'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Cotton'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['jazz', '40s', 'wartime', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.22 dB'
'TXXX:replaygain_track_peak'                        '0.784841'

========================== row from database ==========================
                                              'id'  1434566
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1936/Billy Cotton - Dandelion Daisy And Daffodil (vocal - Alan Breeze) 27-8-1936.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  193
                                           'genre'  prerock-swing
                                        'filesize'  3864381
                                           'mtime'  1620560822
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1936 27 8 1936 prerock swing
                                      'tag_artist'  Billy Cotton
                                     'tag_release'  Regal Zonophone MR 2192
                                       'tag_title'  Dandelion Daisy And Daffodil (vocal - Alan Breeze)
                                             'bpm'  141.611
                                    'search_title'  'alan':7 'and':3 'breeze':8,9 'daffodil':4 'daisy':2 'dandelion':1 'vocal':5,6
                                   'search_artist'  'billy':1 'cotton':2
                                  'search_release'  '2192':4 'mr':3 'regal':1 'zonophone':2
                                     'search_rest'  '00oldiepop':5 '1936':6 '27':7 '8':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'swing':10
                                    'search_combo'  '00oldiepop':20 '1936':21 '2192':15C '27':22 '8':23 'alan':7A 'and':3A 'billy':10B 'breeze':8A,9A 'cotton':11B 'country':19 'daffodil':4A 'daisy':2A 'dandelion':1A 'exotica':17 'jazz':16 'mr':14C 'oldies':18 'prerock':24 'regal':12C 'swing':25 'vocal':5A,6A 'zonophone':13C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['jazz', '40s', 'wartime', 'swing']
                                        'tag_date'  1936
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620560821.5189855  (2021-05-09 13:47:01)
                             'size'  3864381