======================== unified (from filesystem) ========================
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                                        'duration'  '207'
                                          'artist'  'Mississippi John Hurt'
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                                           'title'  'Frankie and Johnny'
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                                      'lastfmtags'  "['acoustic', 'blues', 'delta blues', 'folk', 'classic blues']"
                                     'discogstags'  "['blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '23'
                                      'tracktotal'  '25'
                                            'date'  '2012'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '110'
                                             'key'  '1B'
                                        'acoustid'  '7511e5fb-0670-44ae-9bfb-21c174580271'
rest: ''

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

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'COMM:iTunes_CDDB_1:eng'                            '85114E19+332433+25+150+14874+28634+41617+53224+66861+81075+94795+108925+119831+131965+145889+162383+176517+188803+201654+212784+225730+238401+250189+265153+276189+289270+304795+318037'
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'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDOR' (Original release time)                      '2012'
'TDRC' (Recording time)                             '2012-09-28'
'TENC' (Encoded by)                                 'dBpoweramp Release 14.2'
'TIT2' (Title/songname/content description)         'Frankie and Johnny'
'TKEY' (Initial key)                                '1B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Mississippi John Hurt'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2/2'
'TPUB' (Publisher)                                  'Not Now Music'
'TRCK' (Track number/Position in set)               '23/25'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Hurt, Mississippi John'
'TXXX:ASIN'                                         'B009HCBDSA'
'TXXX:Acoustid Id'                                  '7511e5fb-0670-44ae-9bfb-21c174580271'
'TXXX:Artists'                                      'Mississippi John Hurt'
'TXXX:BARCODE'                                      '5060143494697'
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'TXXX:MusicBrainz Album Id'                         '5b09ad00-ebd3-4933-a163-21505f794555'
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'TXXX:MusicBrainz Album Type'                       'album/compilation'
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'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'blues'
'TXXX:lastfmtags'                                   ['acoustic', 'blues', 'delta blues', 'folk', 'classic blues']
'TXXX:originalyear'                                 '2012'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.69 dB'
'TXXX:replaygain_track_peak'                        '0.354856'
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========================== row from database ==========================
                                              'id'  947841
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/va - Raw Blues Classics Vol. 2/23 - Mississippi John Hurt - Frankie And Johnny.mp3
                                         'working'  None
                                         'bitrate'  156
                                    'duration_sec'  207
                                           'genre'  prerock-jb-blues
                                        'filesize'  4139737
                                           'mtime'  1620402863
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country va Raw Classics Vol. 2 23 And prerock jb blues
                                      'tag_artist'  Mississippi John Hurt
                                     'tag_release'  Acoustic Blues
                                       'tag_title'  Frankie and Johnny
                                             'bpm'  110.0
                                    'search_title'  'and':2 'frankie':1 'johnny':3
                                   'search_artist'  'hurt':3 'john':2 'mississippi':1
                                  'search_release'  'acoustic':1 'blues':2
                                     'search_rest'  '2':10 '23':11 'and':12 'blues':15 'classics':7 'country':4 'exotica':2 'jazz':1 'jb':14 'oldies':3 'prerock':13 'raw':6 'va':5 'vol':8,9
                                    'search_combo'  '2':18 '23':19 'acoustic':7C 'and':2A,20 'blues':8C,23 'classics':15 'country':12 'exotica':10 'frankie':1A 'hurt':6B 'jazz':9 'jb':22 'john':5B 'johnny':3A 'mississippi':4B 'oldies':11 'prerock':21 'raw':14 'va':13 'vol':16,17
                                    'tag_tracknum'  23
                                      'num_images'  1
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['acoustic', 'blues', 'delta blues', 'folk', 'classic blues']
                                        'tag_date'  2012
                                     'discogstags'  ['blues']

============================== file details ==============================
                                           'mtime'  1620402862.9687285  (2021-05-07 17:54:22)
                             'size'  4139737