======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '190'
                                          'artist'  'Vera Lynn'
                                     'text_people'  ''
                                         'release'  'The Ultimate Collection #1'
                                           'title'  'A Nightingale Sang In Berkley'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'jazz', 'female vocalists', 'british', '40s', 'wartime']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '1940'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '129.068'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Ultimate Collection #1'
'TBPM' (BPM (beats per minute))                     '129.068'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1940'
'TIT2' (Title/songname/content description)         'A Nightingale Sang In Berkley'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Vera Lynn'
'TRCK' (Track number/Position in set)               '12'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'jazz', 'female vocalists', 'british', '40s', 'wartime']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.22 dB'
'TXXX:replaygain_track_peak'                        '0.602299'

========================== row from database ==========================
                                              'id'  777909
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Various/Vera Lynn - A Nightingale Sang In Berkley.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  190
                                           'genre'  prerock-unsorted
                                        'filesize'  3054656
                                           'mtime'  1676152142
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Various prerock unsorted
                                      'tag_artist'  Vera Lynn
                                     'tag_release'  The Ultimate Collection #1
                                       'tag_title'  A Nightingale Sang In Berkley
                                             'bpm'  129.068
                                    'search_title'  'a':1 'berkley':5 'in':4 'nightingale':2 'sang':3
                                   'search_artist'  'lynn':2 'vera':1
                                  'search_release'  '1':4,5 'collection':3 'the':1 'ultimate':2
                                     'search_rest'  'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':6 'unsorted':7 'various':5
                                    'search_combo'  '1':11C,12C 'a':1A 'berkley':5A 'collection':10C 'country':16 'exotica':14 'in':4A 'jazz':13 'lynn':7B 'nightingale':2A 'oldies':15 'prerock':18 'sang':3A 'the':8C 'ultimate':9C 'unsorted':19 'various':17 'vera':6B
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HAP-2', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-3', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  ['oldies', 'jazz', 'female vocalists', 'british', '40s', 'wartime']
                                        'tag_date'  1940
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1676152141.8514209  (2023-02-11 22:49:01)
                             'size'  3054656