======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '160'
                                          'artist'  'Jay Wilbur'
                                     'text_people'  ''
                                         'release'  'Rex  9444'
                                           'title'  "There's A Moon On The Mountain (vocal - Bob & Alf Pearson)"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['united kingdom', 'spotify', 'all', 'uk']"
                                     'discogstags'  "['jazz', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1938'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '137.199'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Rex  9444'
'TBPM' (BPM (beats per minute))                     '137.199'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1938'
'TIT2' (Title/songname/content description)         "There's A Moon On The Mountain (vocal - Bob & Alf Pearson)"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jay Wilbur'
'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', 'pop']
'TXXX:lastfmtags'                                   ['united kingdom', 'spotify', 'all', 'uk']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.51 dB'
'TXXX:replaygain_track_peak'                        '0.472893'

========================== row from database ==========================
                                              'id'  1518726
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1938/Jay Wilbur - There_s A Moon On The Mountain (vocal - Bob & Alf Pearson) 24-11-1938.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  160
                                           'genre'  prerock-swing
                                        'filesize'  3204914
                                           'mtime'  1620561295
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1938 There_s 24 11 1938 prerock swing
                                      'tag_artist'  Jay Wilbur
                                     'tag_release'  Rex  9444
                                       'tag_title'  There's A Moon On The Mountain (vocal - Bob & Alf Pearson)
                                             'bpm'  137.199
                                    'search_title'  'a':4 'alf':12 'bob':11 'moon':5 'mountain':8 'on':6 'pearson':13,14 's':2 'the':7 'there':1 'theres':3 'vocal':9,10
                                   'search_artist'  'jay':1 'wilbur':2
                                  'search_release'  '9444':2 'rex':1
                                     'search_rest'  '00oldiepop':5 '1938':6 '24':9 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 's':8 'swing':11 'there':7
                                    'search_combo'  '00oldiepop':23 '1938':24 '24':27 '9444':18C 'a':4A 'alf':12A 'bob':11A 'country':22 'exotica':20 'jay':15B 'jazz':19 'moon':5A 'mountain':8A 'oldies':21 'on':6A 'pearson':13A,14A 'prerock':28 'rex':17C 's':2A,26 'swing':29 'the':7A 'there':1A,25 'theres':3A 'vocal':9A,10A 'wilbur':16B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['united kingdom', 'spotify', 'all', 'uk']
                                        'tag_date'  1938
                                     'discogstags'  ['jazz', 'pop']

============================== file details ==============================
                                           'mtime'  1620561295.1290913  (2021-05-09 13:54:55)
                             'size'  3204914