======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '178'
                                          'artist'  'Louis Armstrong'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Melancholy  blues'
                                           'quals'  ("['Q-HAP-2', 'Q-GRIT-2', 'Q-BUSY-3', 'Q-PLAY-3', 'q-bass-1', 'Q-CHART-2', "
 "'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', 'Q-SYN-1', 'Q-UNU-1', "
 "'Q-JZFKS-3', 'Q-OLDST-1', 'Q-HHRNBTT-1', 'Q-MIXBEAT-1', 'Q-LOCALNESS-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz'
                                             'bpm'  '118.3'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '118.3'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz'
'TIT2' (Title/songname/content description)         'Melancholy  blues'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Louis Armstrong'
'TRCK' (Track number/Position in set)               '0'
'TXXX:MusicMagic Data'                              'AgEBYfwigtinRZ9FglVu2NwAgAGAaoHQEei0YenygAHfeIABgvMbscD2gAHzFoABiiKAAa+qy07dToABgAGTvCmb55KAAZa1gAKAAYmWn3auL4NLJq1BiYElgY+EWgWtppoWgYPq3YyK+oddFuK2SoZ/37+PYoSSgAHMZ8si3VOVDIFvtYsTN++tvZCtw4BIgHI='
'TXXX:MusicMagic Fingerprint'                       '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'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:http://www.foosic.org/'                       '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'
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.21 dB'
'TXXX:replaygain_track_peak'                        '0.410614'

========================== row from database ==========================
                                              'id'  1495248
                                            'path'  /data/Music/Other/Pa/Jazz/Louis Armstrong/Melancholy  blues.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  178
                                           'genre'  prerock-jb-jazz
                                        'filesize'  3579988
                                           'mtime'  1674646705
                                   'redo_metaread'  0
                                        'rest_str'   Pa Jazz prerock jb jazz
                                      'tag_artist'  Louis Armstrong
                                     'tag_release'  None
                                       'tag_title'  Melancholy  blues
                                             'bpm'  118.3
                                    'search_title'  'blues':2 'melancholy':1
                                   'search_artist'  'armstrong':2 'louis':1
                                  'search_release'  
                                     'search_rest'  'jazz':2 'jb':4 'pa':1 'prerock':3
                                    'search_combo'  'armstrong':4B 'blues':2A 'jazz':6 'jb':8 'louis':3B 'melancholy':1A 'pa':5 'prerock':7
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HAP-2', 'Q-GRIT-2', 'Q-BUSY-3', 'Q-PLAY-3', 'q-bass-1', 'Q-CHART-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', 'Q-SYN-1', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-OLDST-1', 'Q-HHRNBTT-1', 'Q-MIXBEAT-1', 'Q-LOCALNESS-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1674646705.0895154  (2023-01-25 12:38:25)
                             'size'  3579988