======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '140'
                                          'artist'  "Howlin' Wolf"
                                     'text_people'  ''
                                         'release'  "The Very Best of Howlin' Wolf: The Millenium Edition"
                                           'title'  "Somebody Walkin' in My House"
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                                      'lastfmtags'  "['delta blues', 'blues', 'rhythm and blues', 'chicago blues', 'classic blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  '15'
                                            'date'  '1962'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '108.996'
                                             'key'  '9A'
                                        'acoustid'  'a1ae0712-e5a7-4290-8ca4-de947b4be6f7'
rest: ''

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

'TALB' (Album/Movie/Show title)                     "The Very Best of Howlin' Wolf: The Millenium Edition"
'TBPM' (BPM (beats per minute))                     '108.996'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '1962'
'TIT2' (Title/songname/content description)         "Somebody Walkin' in My House"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               "Howlin' Wolf"
'TPE2' (Band/orchestra/accompaniment)               "Howlin' Wolf"
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '14/15'
'TSO2'                                              "Howlin' Wolf"
'TSOP' (Performer sort order)                       "Howlin' Wolf"
'TXXX:Acoustid Id'                                  'a1ae0712-e5a7-4290-8ca4-de947b4be6f7'
'TXXX:Artists'                                      "Howlin' Wolf"
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'TXXX:MusicBrainz Album Id'                         'f333cd43-1ec7-4bd3-b679-f66e1921fd04'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'ca5b38c2-f39d-45a4-ad3d-daf4448846ef'
'TXXX:MusicBrainz Release Group Id'                 '316c2e14-43c4-3f44-9965-876d0020f976'
'TXXX:MusicBrainz Release Track Id'                 '54c86004-4f3c-39df-8166-7a9b8e725d69'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['delta blues', 'blues', 'rhythm and blues', 'chicago blues', 'classic blues']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.02 dB'
'TXXX:replaygain_track_peak'                        '0.459028'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'df8a2666-c9fd-402a-8653-0f87b9ab2963')

========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Howlin_ Wolf/14_HOWLIN_ WOLF_SOMEBODY WALKIN_ IN MY HOUSE_THE VERY BEST OF HOWLIN_ WOLF.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  140
                                           'genre'  prerock-jb-blues
                                        'filesize'  2245743
                                           'mtime'  1620402306
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Howlin_ 14_HOWLIN_ WOLF_SOMEBODY WALKIN_ IN MY HOUSE_THE VERY BEST OF HOWLIN_ WOLF prerock jb blues
                                      'tag_artist'  Howlin' Wolf
                                     'tag_release'  The Very Best of Howlin' Wolf: The Millenium Edition
                                       'tag_title'  Somebody Walkin' in My House
                                             'bpm'  108.996
                                    'search_title'  'house':6 'in':4 'my':5 'somebody':1 'walkin':2,3
                                   'search_artist'  'howlin':1,2 'wolf':3
                                  'search_release'  'best':3 'edition':10 'howlin':5,6 'millenium':9 'of':4 'the':1 'very':2 'wolf':7,8
                                     'search_rest'  '14':6 'best':16 'blues':21 'country':4 'exotica':2 'house':13 'howlin':5,7 'in':11 'jazz':1 'jb':20 'my':12 'of':17 'oldies':3 'prerock':19 'somebody':9 'the':14 'very':15 'walkin':10 'wolf':8,18
                                    'search_combo'  '14':25 'best':12C,35 'blues':40 'country':23 'edition':19C 'exotica':21 'house':6A,32 'howlin':7B,8B,14C,15C,24,26 'in':4A,30 'jazz':20 'jb':39 'millenium':18C 'my':5A,31 'of':13C,36 'oldies':22 'prerock':38 'somebody':1A,28 'the':10C,33 'very':11C,34 'walkin':2A,3A,29 'wolf':9B,16C,17C,27,37
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-3', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['delta blues', 'blues', 'rhythm and blues', 'chicago blues', 'classic blues']
                                        'tag_date'  1962
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402306.2601337  (2021-05-07 17:45:06)
                             'size'  2245743