======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '198'
                                          'artist'  'Roy Fox'
                                     'text_people'  ''
                                         'release'  'HMV BD-5279'
                                           'title'  'Gone With The Wind (vocal - Denny Dennis)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', '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'  "['american', 'jazz', 'all', 'british', 'swing']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1937'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '119.054'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'HMV BD-5279'
'TBPM' (BPM (beats per minute))                     '119.054'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1937'
'TIT2' (Title/songname/content description)         'Gone With The Wind (vocal - Denny Dennis)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Roy Fox'
'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'                                   ['american', 'jazz', 'all', 'british', 'swing']
'TXXX:q-bass'                                       '4'
'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'                        '+0.89 dB'
'TXXX:replaygain_track_peak'                        '0.554531'

========================== row from database ==========================
                                              'id'  1445017
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1937/Roy Fox - Gone With The Wind (vocal - Denny Dennis) 16-9-1937.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  198
                                           'genre'  prerock-swing
                                        'filesize'  3970870
                                           'mtime'  1620561127
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1937 16 1937 prerock swing
                                      'tag_artist'  Roy Fox
                                     'tag_release'  HMV BD-5279
                                       'tag_title'  Gone With The Wind (vocal - Denny Dennis)
                                             'bpm'  119.054
                                    'search_title'  'dennis':8,9 'denny':7 'gone':1 'the':3 'vocal':5,6 'wind':4 'with':2
                                   'search_artist'  'fox':2 'roy':1
                                  'search_release'  '5279':3 'bd':2 'bd5279':4 'hmv':1
                                     'search_rest'  '00oldiepop':5 '1937':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'swing':8
                                    'search_combo'  '00oldiepop':20 '1937':21 '5279':14C 'bd':13C 'bd5279':15C 'country':19 'dennis':8A,9A 'denny':7A 'exotica':17 'fox':11B 'gone':1A 'hmv':12C 'jazz':16 'oldies':18 'prerock':22 'roy':10B 'swing':23 'the':3A 'vocal':5A,6A 'wind':4A 'with':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           '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-4', 'q-grit-1']
                                      'lastfmtags'  ['american', 'jazz', 'all', 'british', 'swing']
                                        'tag_date'  1937
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620561126.9920049  (2021-05-09 13:52:06)
                             'size'  3970870