======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '168'
                                          'artist'  'Leni und Ludwig'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Schon ist die Jugend'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-BUSY-3', 'Q-PLAY-2', 'q-bass-3', "
 "'Q-CHART-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'Q-SYN-1', "
 "'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-MIXBEAT-1', 'Q-LOCALNESS-3']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc'
                                             'bpm'  '128.5'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '128.5'
'TCON' (Content type, a.k.a. Genre)                 'loc'
'TIT2' (Title/songname/content description)         'Schon ist die Jugend'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Leni und Ludwig'
'TRCK' (Track number/Position in set)               '0'
'TXXX:MusicMagic Data'                              'AgEBYpX+giqrK4+sgR4XOxz/gAGB3oVsH4+tLx3sgAHWHoABgAEm5636gAHfzYABgpqAAbZiDokV/YABgAGbJCC9AOOAAZ8bgAKAAYKbquix2YPU8Ms0pYABguSC3gP5oaUi3oQ0z2yMMoRsCDes+4bg1AaA/YNNgAG4Z/Oy+AeYloABq/ANR/Nji92kS4ACgAE='
'TXXX:MusicMagic Fingerprint'                       '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'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:http://www.foosic.org/'                       '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'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.08 dB'
'TXXX:replaygain_track_peak'                        '0.530322'

========================== row from database ==========================
                                              'id'  1495633
                                            'path'  /data/Music/Other/Pa/All/Schon ist die Jugend.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  168
                                           'genre'  loc
                                        'filesize'  3378849
                                           'mtime'  1621630396
                                   'redo_metaread'  0
                                        'rest_str'   Pa All loc
                                      'tag_artist'  Leni und Ludwig
                                     'tag_release'  None
                                       'tag_title'  Schon ist die Jugend
                                             'bpm'  128.5
                                    'search_title'  'die':3 'ist':2 'jugend':4 'schon':1
                                   'search_artist'  'leni':1 'ludwig':3 'und':2
                                  'search_release'  
                                     'search_rest'  'all':2 'loc':3 'pa':1
                                    'search_combo'  'all':9 'die':3A 'ist':2A 'jugend':4A 'leni':5B 'loc':10 'ludwig':7B 'pa':8 'schon':1A 'und':6B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'Q-MIXBEAT-1', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-CHART-2', 'Q-JZFKS-1', 'Q-UNU-1', 'q-drums-1', 'Q-SYN-1', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621630395.6631768  (2021-05-21 22:53:15)
                             'size'  3378849