======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '176'
                                          'artist'  'Swingle Singers'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Largo'
                                           'quals'  ("['Q-GRIT-2', 'Q-BUSY-3', 'Q-PLAY-2', 'q-bass-4', 'Q-CHART-2', 'q-drums-1', "
 "'q-other-1', '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'  '121.8'
                                             'key'  'A m'  (8A)
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '121.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TENC' (Encoded by)                                 'iTunes v4.2.0.72'
'TIT2' (Title/songname/content description)         'Largo'
'TKEY' (Initial key)                                'A m'
'TPE1' (Lead performer(s)/Soloist(s))               'Swingle Singers'
'TRCK' (Track number/Position in set)               '0'
'TXXX:MusicMagic Data'                              'AgEBXaDfgsqkHqk6gAHXUUA9gAGBY4B16uaa8yW3gI6wwKSTgAH4dsJSgAHTtoABhFmAAaxKnLPJBYABgAHAZhc/+8SAAZyygAKAAZkLnja/v4a4BwM565X2gcOBX9iRlh4fKIB5u8GNk4O14yi2wYNoz26An4begl2sQa1/yxOSloABuhX14eJ4ifieR4ACgAE='
'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'                                       '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.27 dB'
'TXXX:replaygain_track_peak'                        '0.509686'

========================== row from database ==========================
                                              'id'  1495529
                                            'path'  /data/Music/Other/Pa/Klassiek/Swingle Singers/Largo.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  176
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  3539983
                                           'mtime'  1621094169
                                   'redo_metaread'  0
                                        'rest_str'   Pa Klassiek prerock classical or classical instruments
                                      'tag_artist'  Swingle Singers
                                     'tag_release'  None
                                       'tag_title'  Largo
                                             'bpm'  121.8
                                    'search_title'  'largo':1
                                   'search_artist'  'singers':2 'swingle':1
                                  'search_release'  
                                     'search_rest'  'classical':4 'instruments':6 'klassiek':2 'or':5 'pa':1 'prerock':3
                                    'search_combo'  'classical':7 'instruments':9 'klassiek':5 'largo':1A 'or':8 'pa':4 'prerock':6 'singers':3B 'swingle':2B
                                    '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-1', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621094169.127087  (2021-05-15 17:56:09)
                             'size'  3539983