======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '854'
                                          'artist'  'Ravel'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Bolero'
                                           'quals'  ("['Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-2', 'q-bass-1', 'Q-CHART-2', 'q-drums-2', "
 "'q-other-4', 'q-piano-1', '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']")
                                      'lastfmtags'  "['classical', 'impressionist', 'french', 'composer', 'instrumental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '143.2'
                                             'key'  'G#m'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '143.2'
'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)         'Bolero'
'TKEY' (Initial key)                                'G#m'
'TPE1' (Lead performer(s)/Soloist(s))               'Ravel'
'TRCK' (Track number/Position in set)               '0'
'TXXX:MusicMagic Data'                              'AgEBWgz+hFC6uZNJgF3EZx3hgAGFMIFc/yOYlBgggCvOHoABgAHzuq7lgC2yVYFdhl+AAc5LA/v5xI6EgAG1xBHw5pXR3K/ugAKAAZNEpjGvAYL9AVQ2Ra/rgxqEauuYmok2BZaG5nOReYQN6x61qaXC2XmiFIT8gV/WvsEv8TXA7IL0xHL8iffwora6i5Jcgp4='
'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', 'impressionist', 'french', 'composer', 'instrumental']
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.17 dB'
'TXXX:replaygain_track_peak'                        '0.632171'

========================== row from database ==========================
                                              'id'  1495253
                                            'path'  /data/Music/Other/Pa/Klassiek/Bolero.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  854
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  17094372
                                           'mtime'  1630255034
                                   'redo_metaread'  0
                                        'rest_str'   Pa Klassiek prerock classical or classical instruments
                                      'tag_artist'  Ravel
                                     'tag_release'  None
                                       'tag_title'  Bolero
                                             'bpm'  143.2
                                    'search_title'  'bolero':1
                                   'search_artist'  'ravel':1
                                  'search_release'  
                                     'search_rest'  'classical':4 'instruments':6 'klassiek':2 'or':5 'pa':1 'prerock':3
                                    'search_combo'  'bolero':1A 'classical':6 'instruments':8 'klassiek':4 'or':7 'pa':3 'prerock':5 'ravel':2B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  G#m
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-2', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1']
                                      'lastfmtags'  ['classical', 'impressionist', 'french', 'composer', 'instrumental']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1630255033.9207323  (2021-08-29 18:37:13)
                             'size'  17094372