======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '178'
                                          'artist'  'Buddy Guy'
                                     'text_people'  'Buddy Guy/Ike Turner'
                                         'release'  'ABC of the Blues (Disc 12)'
                                           'title'  'This Is The End'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-2', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
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 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
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                                      'lastfmtags'  "['guitar', 'blues', 'rock', 'chicago blues', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '91.349'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'ABC of the Blues (Disc 12)'
'TBPM' (BPM (beats per minute))                     '91.349'
'TCOM' (Composer)                                   'Buddy Guy/Ike Turner'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'This Is The End'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Buddy Guy'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '12'
'TPUB' (Publisher)                                  'Documents'
'TRCK' (Track number/Position in set)               '03'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['guitar', 'blues', 'rock', 'chicago blues', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.95 dB'
'TXXX:replaygain_track_peak'                        '0.424047'

========================== row from database ==========================
                                              'id'  679868
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Volume 12 - Buddy Guy - Arthur Gunter - Slim Gaillard/03 - This Is The End.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  178
                                           'genre'  prerock-jb-blues
                                        'filesize'  7162617
                                           'mtime'  1620402701
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Volume Arthur Gunter Slim Gaillard 03 prerock jb blues
                                      'tag_artist'  Buddy Guy
                                     'tag_release'  ABC of the Blues (Disc 12)
                                       'tag_title'  This Is The End
                                             'bpm'  91.349
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                                   'search_artist'  'buddy':1 'guy':2
                                  'search_release'  '12':7,8 'abc':1 'blues':4 'disc':5,6 'of':2 'the':3
                                     'search_rest'  'arthur':6 'blues':12 'country':4 'exotica':2 'gaillard':9 'gunter':7 'jazz':1 'jb':11 'oldies':3 'prerock':10 'slim':8 'volume':5
                                    'search_combo'  '12':13C,14C 'abc':7C 'arthur':20 'blues':10C,26 'buddy':5B 'country':18 'disc':11C,12C 'end':4A 'exotica':16 'gaillard':23 'gunter':21 'guy':6B 'is':2A 'jazz':15 'jb':25 'of':8C 'oldies':17 'prerock':24 'slim':22 'the':3A,9C 'this':1A 'volume':19
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', '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-3', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['guitar', 'blues', 'rock', 'chicago blues', 'classic rock']
                                        'tag_date'  2010
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402700.9677691  (2021-05-07 17:51:40)
                             'size'  7162617