======================== unified (from filesystem) ========================
                                         'bitrate'  '80.0'
                                        'duration'  '160'
                                          'artist'  'Kay Armen'
                                     'text_people'  ''
                                         'release'  'Decca 18566'
                                           'title'  'How sweet you are'
                                           '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-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '135'
                                      'tracktotal'  ''
                                            'date'  '1943'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '142.508'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Decca 18566'
'TBPM' (BPM (beats per minute))                     '142.508'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1943'
'TIT2' (Title/songname/content description)         'How sweet you are'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Kay Armen'
'TRCK' (Track number/Position in set)               '135'
'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'                                       '2'
'TXXX:q-chart'                                      '2'
'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'                        '+1.16 dB'
'TXXX:replaygain_track_peak'                        '0.574706'

========================== row from database ==========================
                                              'id'  1455069
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1943/135 How sweet you are - Kay Armen (20-11-1943).mp3
                                         'working'  None
                                         'bitrate'  80
                                    'duration_sec'  160
                                           'genre'  prerock-unsorted
                                        'filesize'  1605511
                                           'mtime'  1621698061
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1943 135 (20 11 1943) prerock unsorted
                                      'tag_artist'  Kay Armen
                                     'tag_release'  Decca 18566
                                       'tag_title'  How sweet you are
                                             'bpm'  142.508
                                    'search_title'  'are':4 'how':1 'sweet':2 'you':3
                                   'search_artist'  'armen':2 'kay':1
                                  'search_release'  '18566':2 'decca':1
                                     'search_rest'  '00oldiepop':5 '135':7 '1943':6,10 '20':8,9 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':11 'unsorted':12
                                    'search_combo'  '00oldiepop':13 '135':15 '18566':8C '1943':14,18 '20':16,17 'are':4A 'armen':6B 'country':12 'decca':7C 'exotica':10 'how':1A 'jazz':9 'kay':5B 'oldies':11 'prerock':19 'sweet':2A 'unsorted':20 'you':3A
                                    'tag_tracknum'  135
                                      'num_images'  0
                                             'key'  8B
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1943
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698060.925254  (2021-05-22 17:41:00)
                             'size'  1605511