======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '442'
                                          'artist'  'Mozart'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Klarinetconcert  in A'
                                           'quals'  ("['Q-GRIT-2', 'Q-BUSY-3', 'Q-PLAY-2', 'q-bass-1', 'Q-CHART-2', 'q-drums-1', "
 "'q-other-4', 'q-piano-1', 'q-vocals-2', 'Q-HAP-3', 'Q-SYN-1', 'Q-UNU-1', "
 "'Q-JZFKS-1', 'Q-OLDST-1', 'Q-HHRNBTT-1', 'Q-MIXBEAT-1', 'Q-LOCALNESS-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '140.6'
                                             'key'  'A#m'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '140.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TENC' (Encoded by)                                 'iTunes v4.7.1.30'
'TIT2' (Title/songname/content description)         'Klarinetconcert  in A'
'TKEY' (Initial key)                                'A#m'
'TPE1' (Lead performer(s)/Soloist(s))               'Mozart'
'TRCK' (Track number/Position in set)               '0'
'TXXX:MusicMagic Data'                              'AgEBWj/yg+XHxrzdge3nQUErgAGD1YAC+62XzRi6gAHDiYABgAHoHKyYgAGjP4ABjh+AAcOfNEDoiYABgAHNOgN/6UGAAa48gAKAAaC3sXq6ZIPG8vY/3cTahEmAiAQGm2EPiIMDyyGNe4DIAQqueoWpyDuDVIjtgAG4MyO0yCOQA4EdvsYRiOCtnL+hToWzgAE='
'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'                                  '1'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PLAY'                                       '2'
'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'                        '-0.32 dB'
'TXXX:replaygain_track_peak'                        '0.503826'

========================== row from database ==========================
                                              'id'  1495472
                                            'path'  /data/Music/Other/Pa/Klassiek/Mozart/Klarinetconcert  in A.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  442
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  8850175
                                           'mtime'  1621094166
                                   'redo_metaread'  0
                                        'rest_str'   Pa Klassiek prerock classical or classical instruments
                                      'tag_artist'  Mozart
                                     'tag_release'  None
                                       'tag_title'  Klarinetconcert  in A
                                             'bpm'  140.6
                                    'search_title'  'a':3 'in':2 'klarinetconcert':1
                                   'search_artist'  'mozart':1
                                  'search_release'  
                                     'search_rest'  'classical':4 'instruments':6 'klassiek':2 'or':5 'pa':1 'prerock':3
                                    'search_combo'  'a':3A 'classical':8 'in':2A 'instruments':10 'klarinetconcert':1A 'klassiek':6 'mozart':4B 'or':9 'pa':5 'prerock':7
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  A#m
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-1', 'Q-OLDST-1', 'Q-GRIT-2', 'Q-CHART-2', 'Q-JZFKS-1', 'Q-UNU-1', 'q-drums-1', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621094166.44759  (2021-05-15 17:56:06)
                             'size'  8850175