======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '156'
                                          'artist'  'Bach'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Ave Maria'
                                           'quals'  ("['Q-GRIT-2', 'Q-BUSY-3', 'Q-PLAY-2', 'q-bass-1', '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']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '127.8'
                                             'key'  'G#m'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '127.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TIT2' (Title/songname/content description)         'Ave Maria'
'TKEY' (Initial key)                                'G#m'
'TPE1' (Lead performer(s)/Soloist(s))               'Bach'
'TRCK' (Track number/Position in set)               '0'
'TXXX:MusicMagic Data'                              'AgEBXUEJhEvH670qhXjeflfzgAGFvIAC+Cye5hjdgAHC6IABiNXk9KylgAG4pYEQgwGkk8f7BlLvJ4ABgAHHkgKO9r7uzK1BgAKAAZ7hsJi22INC3gM+Q5nAgxSAFxUBnQcWeYER0giNFYC4FXmvVIJQvQqDyYhpgR281BnxygyKhoAKvpwbKNeXnP2kDIACgAE='
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.75 dB'
'TXXX:replaygain_track_peak'                        '0.485833'

========================== row from database ==========================
                                              'id'  1495475
                                            'path'  /data/Music/Other/Pa/Klassiek/Bach/Ave Maria.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  156
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  3133457
                                           'mtime'  1621094163
                                   'redo_metaread'  0
                                        'rest_str'   Pa Klassiek prerock classical or classical instruments
                                      'tag_artist'  Bach
                                     'tag_release'  None
                                       'tag_title'  Ave Maria
                                             'bpm'  127.8
                                    'search_title'  'ave':1 'maria':2
                                   'search_artist'  'bach':1
                                  'search_release'  
                                     'search_rest'  'classical':4 'instruments':6 'klassiek':2 'or':5 'pa':1 'prerock':3
                                    'search_combo'  'ave':1A 'bach':3B 'classical':7 'instruments':9 'klassiek':5 'maria':2A 'or':8 'pa':4 'prerock':6
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  G#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-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621094162.8136616  (2021-05-15 17:56:02)
                             'size'  3133457