======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '185'
                                          'artist'  'Simon & Garfunkel'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Kathy's song"
                                           'quals'  ("['Q-HAP-2', 'Q-GRIT-2', 'Q-BUSY-2', 'Q-PLAY-3', 'q-bass-1', 'q-drums-1', "
 "'q-other-4', 'q-piano-1', 'q-vocals-3', 'Q-SYN-1', 'Q-UNU-1', 'Q-CHART-3', "
 "'Q-JZFKS-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', 'Q-MIXBEAT-1', 'Q-LOCALNESS-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '112.5'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '112.5'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TIT2' (Title/songname/content description)         "Kathy's song"
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Simon & Garfunkel'
'TRCK' (Track number/Position in set)               '0'
'TXXX:MusicMagic Data'                              'AgEBXZuogmGk+6R0gtXTtDxmgAGGeYDpDD6hQzh/gQzCPavkgvMbcawvgAHHEYABggmAAblb/T3w3IABgAHQJf5f3heAAasDgAKAAZz1oJzCRYWj6206JJESg/uCk/CamzIuvIP+3reXn4RS/GCut5Q1wp2PyYQwgWTIKMBI6AymnIH/uP30K+zHoUev7YcSgIY='
'TXXX:MusicMagic Fingerprint'                       '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'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-CHART'                                      '3'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.54 dB'
'TXXX:replaygain_track_peak'                        '0.514922'

========================== row from database ==========================
                                              'id'  1495470
                                            'path'  /data/Music/Other/Pa/All/Simon & Garfunkel/Kathy's song.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  185
                                           'genre'  ifs-songwriter
                                        'filesize'  3725939
                                           'mtime'  1637330799
                                   'redo_metaread'  0
                                        'rest_str'   Pa All ifs songwriter
                                      'tag_artist'  Simon & Garfunkel
                                     'tag_release'  None
                                       'tag_title'  Kathy's song
                                             'bpm'  112.5
                                    'search_title'  'kathy':1 'kathys':3 's':2 'song':4
                                   'search_artist'  'garfunkel':2 'simon':1
                                  'search_release'  
                                     'search_rest'  'all':2 'ifs':3 'pa':1 'songwriter':4
                                    'search_combo'  'all':8 'garfunkel':6B 'ifs':9 'kathy':1A 'kathys':3A 'pa':7 's':2A 'simon':5B 'song':4A 'songwriter':10
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-1', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-3', 'q-drums-1', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-2', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637330799.4263406  (2021-11-19 15:06:39)
                             'size'  3725939