======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '178'
                                          'artist'  'Mozart'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Ave verum corpus'
                                           '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'  '136.0'
                                             'key'  'A#m'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '136.0'
'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)         'Ave verum corpus'
'TKEY' (Initial key)                                'A#m'
'TPE1' (Lead performer(s)/Soloist(s))               'Mozart'
'TRCK' (Track number/Position in set)               '0'
'TXXX:MusicMagic Data'                              'AgEBXUEigt3eEcemhn+sTFcQgAGC94B1FUui0SUFgAHSsYABgvPoSKoKgAGmh4ABgduAAcjXPZn7oYABgAGueQ/W7/2AAa+ygAKAAZAcwIXRVYTk6jc+s428gwCAKRMqn14UeoAd0sWAAYB/BJOr8IAGtKiCAIkXgAHBayix3TuGO4Nhtm8XZ+M3swqnpoACgAE='
'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'                        '-0.14 dB'
'TXXX:replaygain_track_peak'                        '0.570257'

========================== row from database ==========================
                                              'id'  1495625
                                            'path'  /data/Music/Other/Pa/Klassiek/Mozart/Ave verum corpus.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  178
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  3574470
                                           'mtime'  1621094166
                                   'redo_metaread'  0
                                        'rest_str'   Pa Klassiek prerock classical classical instruments
                                      'tag_artist'  Mozart
                                     'tag_release'  None
                                       'tag_title'  Ave verum corpus
                                             'bpm'  136.0
                                    'search_title'  'ave':1 'corpus':3 'verum':2
                                   'search_artist'  'mozart':1
                                  'search_release'  
                                     'search_rest'  'classical':4 'instruments':5 'klassiek':2 'pa':1 'prerock':3
                                    'search_combo'  'ave':1A 'classical':8 'corpus':3A 'instruments':9 'klassiek':6 'mozart':4B 'pa':5 'prerock':7 'verum':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  A#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'  1621094166.083354  (2021-05-15 17:56:06)
                             'size'  3574470