======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '159'
                                          'artist'  'Charlie & His Orchestra'
                                     'text_people'  'Frank Churchill'
                                         'release'  'Propaganda Swing'
                                           'title'  "Who's Afraid of the Big Bad Wolf?"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-2', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['jazz', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '21'
                                      'tracktotal'  ''
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '146.000'
                                             'key'  '7B'
                                        'acoustid'  '6b0a9015-eada-4e44-b1a3-6aa99a6509a3'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Propaganda Swing'
'TBPM' (BPM (beats per minute))                     '146.000'
'TCOM' (Composer)                                   'Frank Churchill'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDOR' (Original release time)                      '1990'
'TDRC' (Recording time)                             '1990'
'TEXT' (Lyricist/Text writer)                       'Ann Ronell/Frank Churchill'
'TIT2' (Title/songname/content description)         "Who's Afraid of the Big Bad Wolf?"
'TKEY' (Initial key)                                '7B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Charlie & His Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'Charlie & His Orchestra'
'TPUB' (Publisher)                                  'Harlequin'
'TRCK' (Track number/Position in set)               '21'
'TSO2'                                              'Charlie & His Orchestra'
'TSOC'                                              'Churchill, Frank'
'TSOP' (Performer sort order)                       'Charlie & His Orchestra'
'TXXX:ASIN'                                         'B000001XXY'
'TXXX:Acoustid Id'                                  '6b0a9015-eada-4e44-b1a3-6aa99a6509a3'
'TXXX:Artists'                                      'Charlie & His Orchestra'
'TXXX:BARCODE'                                      '008637200329'
'TXXX:CATALOGNUMBER'                                'HQ CD 03'
'TXXX:MusicBrainz Album Artist Id'                  'f301090b-c46a-4b3f-976f-7232c45aacab'
'TXXX:MusicBrainz Album Id'                         'bf531a5e-5f52-4cb4-8578-b54b997ce53d'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'f301090b-c46a-4b3f-976f-7232c45aacab'
'TXXX:MusicBrainz Release Group Id'                 '52efbdff-ec4c-341a-82ce-95eed5ca954c'
'TXXX:MusicBrainz Release Track Id'                 '9b3bb8f9-af25-3305-99ff-3bb00bae1599'
'TXXX:MusicBrainz Work Id'                          '8a2edac3-2be0-38ce-99a6-d93555b409b8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:Work'                                         "Who's Afraid of the Big Bad Wolf?"
'TXXX:discogstags'                                  ['jazz', 'swing']
'TXXX:originalyear'                                 '1990'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'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'                        '+1.65 dB'
'TXXX:replaygain_track_peak'                        '0.497523'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'abb91e8f-6471-4cb3-9875-5d34c6e47fae')

========================== row from database ==========================
                                              'id'  1508193
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00jazzes/(1990) Propaganda Swing/[propaganda swing] 21 - charlie & his orchestra - who_s afraid of the big bad wolf.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  159
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3890892
                                           'mtime'  1620524002
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00jazzes (1990) [propaganda swing] 21 charlie his orchestra who_s afraid big bad wolf prerock jb jazz unsorted
                                      'tag_artist'  Charlie & His Orchestra
                                     'tag_release'  Propaganda Swing
                                       'tag_title'  Who's Afraid of the Big Bad Wolf?
                                             'bpm'  146.0
                                    'search_title'  'afraid':4 'bad':8 'big':7 'of':5 's':2 'the':6 'who':1 'whos':3 'wolf':9
                                   'search_artist'  'charlie':1 'his':2 'orchestra':3
                                  'search_release'  'propaganda':1 'swing':2
                                     'search_rest'  '00jazzes':5 '1990':6,7 '21':12 'afraid':18 'bad':20 'big':19 'charlie':13 'country':4 'exotica':2 'his':14 'jazz':1 'jb':23 'oldies':3 'orchestra':15 'prerock':22 'propaganda':8,9 's':17 'swing':10,11 'unsorted':24 'who':16 'wolf':21
                                    'search_combo'  '00jazzes':19 '1990':20,21 '21':26 'afraid':4A,32 'bad':8A,34 'big':7A,33 'charlie':10B,27 'country':18 'exotica':16 'his':11B,28 'jazz':15 'jb':37 'of':5A 'oldies':17 'orchestra':12B,29 'prerock':36 'propaganda':13C,22,23 's':2A,31 'swing':14C,24,25 'the':6A 'unsorted':38 'who':1A,30 'whos':3A 'wolf':9A,35
                                    'tag_tracknum'  21
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1990
                                     'discogstags'  ['jazz', 'swing']

============================== file details ==============================
                                           'mtime'  1620524001.7823954  (2021-05-09 03:33:21)
                             'size'  3890892