======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '196'
                                          'artist'  'Boccherini'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Menuet'
                                           'quals'  ("['Q-GRIT-2', 'Q-BUSY-3', 'Q-PLAY-2', 'q-bass-1', 'Q-CHART-2', 'q-drums-1', "
 "'q-other-4', 'q-piano-2', 'q-vocals-1', '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'  '87.4'
                                             'key'  'E m'  (9A)
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '87.4'
'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)         'Menuet'
'TKEY' (Initial key)                                'E m'
'TPE1' (Lead performer(s)/Soloist(s))               'Boccherini'
'TRCK' (Track number/Position in set)               '0'
'TXXX:MusicMagic Data'                              'AgEBYfxWgsepv6CFgiZnXkkLhWaBV4ACIu6ifvySgITIUIABgvMwh7FRgAHoN4ABh8mAAbJaEnmvJIABgAHRPT1VyyCAAZnQgAKAAYPQwBHGK4PtA+M6mYTCgzyBogmYo50N5YA30V+E4oMl+1K0o4A3wzWJuYtXgAHEswba1TKGj4VtwEAXGeZ0nlmoOIACgAE='
'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'                                      '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.57 dB'
'TXXX:replaygain_track_peak'                        '0.607814'

========================== row from database ==========================
                                              'id'  1495467
                                            'path'  /data/Music/Other/Pa/Klassiek/Menuet.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  196
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  3940598
                                           'mtime'  1621094166
                                   'redo_metaread'  0
                                        'rest_str'   Pa Klassiek prerock classical or classical instruments
                                      'tag_artist'  Boccherini
                                     'tag_release'  None
                                       'tag_title'  Menuet
                                             'bpm'  87.4
                                    'search_title'  'menuet':1
                                   'search_artist'  'boccherini':1
                                  'search_release'  
                                     'search_rest'  'classical':4 'instruments':6 'klassiek':2 'or':5 'pa':1 'prerock':3
                                    'search_combo'  'boccherini':2B 'classical':6 'instruments':8 'klassiek':4 'menuet':1A 'or':7 'pa':3 'prerock':5
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  E m
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-2', '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'  1621094165.9297426  (2021-05-15 17:56:05)
                             'size'  3940598