======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '213'
                                          'artist'  'Lehar'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Wolgalied'
                                           'quals'  ("['Q-GRIT-2', 'Q-BUSY-3', 'Q-PLAY-2', 'q-bass-2', 'Q-CHART-2', 'q-drums-1', "
 "'q-other-3', 'q-piano-1', 'q-vocals-4', 'Q-HAP-3', 'Q-SYN-1', 'Q-UNU-1', "
 "'Q-JZFKS-1', 'Q-OLDST-1', 'Q-HHRNBTT-1', 'Q-MIXBEAT-1', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['classical', 'operetta', 'romantic', 'waltz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '145.3'
                                             'key'  'E m'  (9A)
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '145.3'
'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)         'Wolgalied'
'TKEY' (Initial key)                                'E m'
'TPE1' (Lead performer(s)/Soloist(s))               'Lehar'
'TRCK' (Track number/Position in set)               '0'
'TXXX:MusicMagic Data'                              'AgEBWqUKgw+1rsNshRDgXjbPgAGCXYgiC4itKB6BgAHPaoABgvMH3bFcgAG4gYABh5SAAcJKAKraKYABgAG4+xXa4aWAAacngAKAAZVOu+S1CINT7q5K4Jbeg12BXROWoMkZDYA7zg+AAYD9CJWuqIABupKDv4YbgAHFhRH43pqAAYABv7AaLOtqp7aqCIACgAE='
'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:lastfmtags'                                   ['classical', 'operetta', 'romantic', 'waltz']
'TXXX:q-bass'                                       '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.38 dB'
'TXXX:replaygain_track_peak'                        '0.574836'

========================== row from database ==========================
                                              'id'  1495257
                                            'path'  /data/Music/Other/Pa/Klassiek/Wolgalied.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  213
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  4285551
                                           'mtime'  1621094171
                                   'redo_metaread'  0
                                        'rest_str'   Pa Klassiek prerock classical or classical instruments
                                      'tag_artist'  Lehar
                                     'tag_release'  None
                                       'tag_title'  Wolgalied
                                             'bpm'  145.3
                                    'search_title'  'wolgalied':1
                                   'search_artist'  'lehar':1
                                  'search_release'  
                                     'search_rest'  'classical':4 'instruments':6 'klassiek':2 'or':5 'pa':1 'prerock':3
                                    'search_combo'  'classical':6 'instruments':8 'klassiek':4 'lehar':2B 'or':7 'pa':3 'prerock':5 'wolgalied':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  E m
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-3', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-2']
                                      'lastfmtags'  ['classical', 'operetta', 'romantic', 'waltz']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621094170.6394405  (2021-05-15 17:56:10)
                             'size'  4285551