======================== unified (from filesystem) ========================
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                                        'duration'  '337'
                                          'artist'  'Sarah Vaughan'
                                     'text_people'  ''
                                         'release'  "Sarah Vaughan's Finest Hour"
                                           'title'  "Sassie's Blues"
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                                      'lastfmtags'  "['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'blues']"
                                     'discogstags'  "['jazz', 'bop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '18'
                                      'tracktotal'  '18'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-vocal'
                                             'bpm'  '129.233'
                                             'key'  '6A'
                                        'acoustid'  'f34eeedc-fde9-4c88-a316-de03b09c9da8'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:CDDB Disc ID:XXX'                             '0A0E9112'
'COMM:ID3v1 Comment:XXX'                            '0A0E9112'
'TALB' (Album/Movie/Show title)                     "Sarah Vaughan's Finest Hour"
'TBPM' (BPM (beats per minute))                     '129.233'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-vocal'
'TDOR' (Original release time)                      '2000'
'TDRC' (Recording time)                             '2000-06-13'
'TIT2' (Title/songname/content description)         "Sassie's Blues"
'TKEY' (Initial key)                                '6A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Sarah Vaughan'
'TPE2' (Band/orchestra/accompaniment)               'Sarah Vaughan'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Verve'
'TRCK' (Track number/Position in set)               '18/18'
'TSO2'                                              'Vaughan, Sarah'
'TSOP' (Performer sort order)                       'Vaughan, Sarah'
'TSRC' (ISRC (international standard recording code))  'USPR36301949'
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'TXXX:ASIN'                                         'B00004ST4V'
'TXXX:Acoustid Id'                                  'f34eeedc-fde9-4c88-a316-de03b09c9da8'
'TXXX:Artists'                                      'Sarah Vaughan'
'TXXX:BARCODE'                                      '731454359726'
'TXXX:CATALOGNUMBER'                                '3145435972'
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'TXXX:Q-LOCALNESS'                                  '2'
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'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
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'TXXX:discogstags'                                  ['jazz', 'bop']
'TXXX:lastfmtags'                                   ['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'blues']
'TXXX:originalyear'                                 '2000'
'TXXX:q-bass'                                       '1'
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'TXXX:q-drums'                                      '3'
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'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.20 dB'
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========================== row from database ==========================
                                              'id'  1526936
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Vaughan, Sarah/Sarah Vaughan_s Finest Hour/Sarah Vaughan - Sassie_s Blues - 18.mp3
                                         'working'  None
                                         'bitrate'  152
                                    'duration_sec'  337
                                           'genre'  prerock-jb-jazz-vocal
                                        'filesize'  6450024
                                           'mtime'  1620537135
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Vaughan, Vaughan_s Sassie_s 18 prerock jb jazz vocal
                                      'tag_artist'  Sarah Vaughan
                                     'tag_release'  Sarah Vaughan's Finest Hour
                                       'tag_title'  Sassie's Blues
                                             'bpm'  129.233
                                    'search_title'  'blues':4 's':2 'sassie':1 'sassies':3
                                   'search_artist'  'sarah':1 'vaughan':2
                                  'search_release'  'finest':5 'hour':6 's':3 'sarah':1 'vaughan':2 'vaughans':4
                                     'search_rest'  '18':11 'country':4 'exotica':2 'jazz':1 'jb':13 'oldies':3 'prerock':12 's':8,10 'sassie':9 'vaughan':5,6,7 'vocal':14
                                    'search_combo'  '18':23 'blues':4A 'country':16 'exotica':14 'finest':11C 'hour':12C 'jazz':13 'jb':25 'oldies':15 'prerock':24 's':2A,9C,20,22 'sarah':5B,7C 'sassie':1A,21 'sassies':3A 'vaughan':6B,8C,17,18,19 'vaughans':10C 'vocal':26
                                    'tag_tracknum'  18
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', '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-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'blues']
                                        'tag_date'  2000
                                     'discogstags'  ['jazz', 'bop']

============================== file details ==============================
                                           'mtime'  1620537135.2585626  (2021-05-09 07:12:15)
                             'size'  6450024