======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '492'
                                          'artist'  'J.B.O.'
                                     'text_people'  ''
                                         'release'  'Sex Sex Sex'
                                           'title'  'Always Look on the Dark Side of Life'
                                           'quals'  "['q-bass-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  '19'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  ''
                                             'key'  ''
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Sex Sex Sex'
'TCMP'                                              '0'
'TDRC' (Recording time)                             '2000-11-06'
'TDRL' (Release time)                               '2000-11-06'
'TDTG' (Tagging time)                               '2008-03-03 04:54:47'
'TIT2' (Title/songname/content description)         'Always Look on the Dark Side of Life'
'TPE1' (Lead performer(s)/Soloist(s))               'J.B.O.'
'TRCK' (Track number/Position in set)               '19/19'
'TSOP' (Performer sort order)                       'J.B.O.'
'TXXX:MusicBrainz Album Artist'                     'J.B.O.'
'TXXX:MusicBrainz Album Artist Id'                  '11780147-21c2-4060-abf5-b0804119ef50'
'TXXX:MusicBrainz Album Artist Sortname'            'J.B.O.'
'TXXX:MusicBrainz Album Id'                         'd88b2296-b615-4913-8a61-07a7cef0b028'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '11780147-21c2-4060-abf5-b0804119ef50'
'TXXX:MusicBrainz Non-Album'                        '0'
'TXXX:MusicIP PUID'                                 '9dad5cf8-550c-1620-edce-7e6b9c2f2ade'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'5dae931a-3904-4599-91df-452ad8ac8ab4')

========================== row from database ==========================
                                              'id'  1538316
                                            'path'  /data/Music/Other/PrevSet/[9amusing]/JBO/Always Look on the Dark Side of Life.MP3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  492
                                           'genre'  
                                        'filesize'  7883951
                                           'mtime'  1657701404
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9amusing] JBO
                                      'tag_artist'  J.B.O.
                                     'tag_release'  Sex Sex Sex
                                       'tag_title'  Always Look on the Dark Side of Life
                                             'bpm'  None
                                    'search_title'  'always':1 'dark':5 'life':8 'look':2 'of':7 'on':3 'side':6 'the':4
                                   'search_artist'  'b':2 'j':1 'jbo':4 'o':3
                                  'search_release'  'sex':1
                                     'search_rest'  '9amusing':2,3 'jbo':4 'prev':5 'prevset':1 'set':6
                                    'search_combo'  '9amusing':15,16 'always':1A 'b':10B 'dark':5A 'j':9B 'jbo':12B,17 'life':8A 'look':2A 'o':11B 'of':7A 'on':3A 'prev':18 'prevset':14 'set':19 'sex':13C 'side':6A 'the':4A
                                    'tag_tracknum'  19
                                      'num_images'  0
                                             'key'  
                                           'quals'  ['q-bass-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1657701404.4986596  (2022-07-13 10:36:44)
                             'size'  7883951