======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '120'
                                          'artist'  'Animaniacs'
                                     'text_people'  ''
                                         'release'  'Steven Spielberg Presents Animaniacs'
                                           'title'  "I'm Cute"
                                           'quals'  "['q-bass-3', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '90.0'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=153)
'PRIV:www.mexp.dk:\x01\x08\x00\x00\x00\x00amusing'  PRIV(owner='www.mexp.dk', data=b'\x01\x08\x00\x00\x00\x00amusing')
'TALB' (Album/Movie/Show title)                     'Steven Spielberg Presents Animaniacs'
'TBPM' (BPM (beats per minute))                     '90.0'
'TIT2' (Title/songname/content description)         "I'm Cute"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Animaniacs'
'TRCK' (Track number/Position in set)               '13'
'TXXX:MusicBrainz Album Id'                         '19bfb389-e8f8-4f98-af7f-46ab9e6ea1ed'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'soundtrack'
'TXXX:MusicBrainz Artist Id'                        'd6b4520c-903b-4332-8865-1eed9799aa82'
'TXXX:MusicBrainz TRM Id'                           'fadcfda2-4889-4ad9-8337-1458e7cb13df'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'339be174-c931-426e-9e24-70860788063b')

========================== row from database ==========================
                                              'id'  1538151
                                            'path'  /data/Music/Other/PrevSet/[8ohdear]/Animaniacs/I'm Cute.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  120
                                           'genre'  
                                        'filesize'  2908168
                                           'mtime'  1662800386
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [8ohdear]
                                      'tag_artist'  Animaniacs
                                     'tag_release'  Steven Spielberg Presents Animaniacs
                                       'tag_title'  I'm Cute
                                             'bpm'  90.0
                                    'search_title'  'cute':4 'i':1 'im':3 'm':2
                                   'search_artist'  'animaniacs':1
                                  'search_release'  'animaniacs':4 'presents':3 'spielberg':2 'steven':1
                                     'search_rest'  '8ohdear':2,3 'prev':4 'prevset':1 'set':5
                                    'search_combo'  '8ohdear':11,12 'animaniacs':5B,9C 'cute':4A 'i':1A 'im':3A 'm':2A 'presents':8C 'prev':13 'prevset':10 'set':14 'spielberg':7C 'steven':6C
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['q-bass-3', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800386.3821406  (2022-09-10 10:59:46)
                             'size'  2908168