======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '166'
                                          'artist'  'Murry K Hill'
                                     'text_people'  ''
                                         'release'  'Victor 16890 (9868)'
                                           'title'  'How Columbus Discovered America'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1911'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '132.098'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Victor 16890 (9868)'
'TBPM' (BPM (beats per minute))                     '132.098'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1911'
'TIT2' (Title/songname/content description)         'How Columbus Discovered America'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Murry K Hill'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '+3.28 dB'
'TXXX:replaygain_track_peak'                        '0.468758'

========================== row from database ==========================
                                              'id'  1441669
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1911/Murry K Hill - How Columbus Discovered America 30-1-1911.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  166
                                           'genre'  prerock-vocal
                                        'filesize'  3325531
                                           'mtime'  1620666103
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1911 30 1911 prerock vocal
                                      'tag_artist'  Murry K Hill
                                     'tag_release'  Victor 16890 (9868)
                                       'tag_title'  How Columbus Discovered America
                                             'bpm'  132.098
                                    'search_title'  'america':4 'columbus':2 'discovered':3 'how':1
                                   'search_artist'  'hill':3 'k':2 'murry':1
                                  'search_release'  '16890':2 '9868':3,4 'victor':1
                                     'search_rest'  '00oldiepop':5 '1911':6 '30':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'vocal':9
                                    'search_combo'  '00oldiepop':16 '16890':9C '1911':17 '30':18 '9868':10C,11C 'america':4A 'columbus':2A 'country':15 'discovered':3A 'exotica':13 'hill':7B 'how':1A 'jazz':12 'k':6B 'murry':5B 'oldies':14 'prerock':19 'victor':8C 'vocal':20
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', '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-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1911
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666102.6328182  (2021-05-10 19:01:42)
                             'size'  3325531