======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '457'
                                          'artist'  'Beethoven'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Romance #1'
                                           'quals'  ("['Q-GRIT-2', 'Q-BUSY-3', 'Q-PLAY-2', 'q-bass-1', 'Q-CHART-2', 'q-drums-1', "
 "'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']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '124.2'
                                             'key'  'E m'  (9A)
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunes_CDDB_TrackNumber:eng'                  '7'
'TBPM' (BPM (beats per minute))                     '124.2'
'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)         'Romance #1'
'TKEY' (Initial key)                                'E m'
'TPE1' (Lead performer(s)/Soloist(s))               'Beethoven'
'TRCK' (Track number/Position in set)               '07'
'TXXX:MusicMagic Data'                              'AgEANdH8lcG6hcO9ghXiKy9RgAGCGoACLgmlyv9dgAHJ0oABgvMlmaxYgAG4LYABloqAAaZrHKuijYABgAG5hTH21zuAAZZagAKAAZIBpeu2goMeFPwg6JkRgsqADvBslqT/ZoCKuQyO2YBB/4mwZ4Az1miAOJpSgAGkuzNrsWmInYAKuH4BGN8BghKVuoVlgAE='
'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'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.44 dB'
'TXXX:replaygain_track_peak'                        '0.960087'

========================== row from database ==========================
                                              'id'  1495457
                                            'path'  /data/Music/Other/Pa/Klassiek/Beethoven/Romance #1.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  457
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  9165662
                                           'mtime'  1621094163
                                   'redo_metaread'  0
                                        'rest_str'   Pa Klassiek prerock classical or classical instruments
                                      'tag_artist'  Beethoven
                                     'tag_release'  None
                                       'tag_title'  Romance #1
                                             'bpm'  124.2
                                    'search_title'  '1':2,3 'romance':1
                                   'search_artist'  'beethoven':1
                                  'search_release'  
                                     'search_rest'  'classical':4 'instruments':6 'klassiek':2 'or':5 'pa':1 'prerock':3
                                    'search_combo'  '1':2A,3A 'beethoven':4B 'classical':8 'instruments':10 'klassiek':6 'or':9 'pa':5 'prerock':7 'romance':1A
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  E 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-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'  1621094163.272074  (2021-05-15 17:56:03)
                             'size'  9165662