======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '358'
                                          'artist'  'Sandra'
                                     'text_people'  ''
                                         'release'  'The Long Play'
                                           'title'  "(I'll Never Be) Maria Magdalena"
                                           'quals'  "['q-bass-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '8'
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'Eighties'
                                             'bpm'  '104.0'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Long Play'
'TBPM' (BPM (beats per minute))                     '104.0'
'TCMP'                                              '0'
'TCON' (Content type, a.k.a. Genre)                 'Eighties'
'TDRC' (Recording time)                             '1985'
'TDRL' (Release time)                               '1985'
'TDTG' (Tagging time)                               '2007-06-08 20:25:04'
'TIT2' (Title/songname/content description)         "(I'll Never Be) Maria Magdalena"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sandra'
'TRCK' (Track number/Position in set)               '5/8'
'TSOP' (Performer sort order)                       'Sandra'
'TXXX:MusicBrainz Album Artist'                     'Sandra'
'TXXX:MusicBrainz Album Artist Id'                  '9809d784-037f-46e7-8d2d-7ecad897f355'
'TXXX:MusicBrainz Album Artist Sortname'            'Sandra'
'TXXX:MusicBrainz Album Id'                         '3bceca37-ed9a-4a96-9d31-4b84866fac4e'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '9809d784-037f-46e7-8d2d-7ecad897f355'
'TXXX:MusicBrainz Non-Album'                        '0'
'TXXX:MusicIP PUID'                                 'ed2d974b-3280-0221-1225-42bd46429087'
'TXXX:MusicMagic Data'                              'AgEAIo9sl86Qh6rwgVT2bSXChPiAcYDpwLSR8yrDhJ0sbYABgAHSLK8tkHjPGLschR+AAeOogk4D3KG6gAGaAeyO8FGh1rqvgAKAAZdXlmS/cIMDDg8nS4XTgNyC1MrCkgwq0oU7HpiZm4KV1kmvgp6L3KqoUoW6gAHkpYze8lGrZIAQpcvr/PNip5u7g4R7hD8='
'TXXX:MusicMagic Fingerprint'                       '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'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'71ab56bb-ee1b-49d8-820a-8e22b9f0fd3a')

========================== row from database ==========================
                                              'id'  1538443
                                            'path'  /data/Music/Other/PrevSet/[8ohdear]/Sandra - (I'll Never Be) Maria Magdalena.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  358
                                           'genre'  Eighties
                                        'filesize'  8607140
                                           'mtime'  1662800447
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [8ohdear] Eighties
                                      'tag_artist'  Sandra
                                     'tag_release'  The Long Play
                                       'tag_title'  (I'll Never Be) Maria Magdalena
                                             'bpm'  104.0
                                    'search_title'  'be':5,6 'i':1 'ill':3 'll':2 'magdalena':8 'maria':7 'never':4
                                   'search_artist'  'sandra':1
                                  'search_release'  'long':2 'play':3 'the':1
                                     'search_rest'  '8ohdear':2,3 'eighties':4 'prev':5 'prevset':1 'set':6
                                    'search_combo'  '8ohdear':14,15 'be':5A,6A 'eighties':16 'i':1A 'ill':3A 'll':2A 'long':11C 'magdalena':8A 'maria':7A 'never':4A 'play':12C 'prev':17 'prevset':13 'sandra':9B 'set':18 'the':10C
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['q-bass-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800446.8241897  (2022-09-10 11:00:46)
                             'size'  8607140