======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '225'
                                          'artist'  'Aqua'
                                     'text_people'  ''
                                         'release'  'Aquarius'
                                           'title'  'Freaky Friday'
                                           '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'  '3'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'Europop'
                                             'bpm'  '138.2'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=153)
'PRIV:www.mexp.dk:\x01\x04\x00\x00\x00\x00pop\x01\x07\x00\x00\x00\x00active\x01\t\x00\x00\x00\x00cheerful'  PRIV(owner='www.mexp.dk', data=b'\x01\x04\x00\x00\x00\x00pop\x01\x07\x00\x00\x00\x00active\x01\t\x00\x00\x00\x00cheerful')
'TALB' (Album/Movie/Show title)                     'Aquarius'
'TBPM' (BPM (beats per minute))                     '138.2'
'TCON' (Content type, a.k.a. Genre)                 'Europop'
'TIT2' (Title/songname/content description)         'Freaky Friday'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Aqua'
'TRCK' (Track number/Position in set)               '3'
'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'ec409dcc-4b76-4681-94f5-d88fe21d74f4\x00')

========================== row from database ==========================
                                              'id'  1538401
                                            'path'  /data/Music/Other/PrevSet/[8ohdear]/Aqua/Freaky Friday.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  225
                                           'genre'  Europop
                                        'filesize'  3616768
                                           'mtime'  1662800410
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [8ohdear] Europop
                                      'tag_artist'  Aqua
                                     'tag_release'  Aquarius
                                       'tag_title'  Freaky Friday
                                             'bpm'  138.2
                                    'search_title'  'freaky':1 'friday':2
                                   'search_artist'  'aqua':1
                                  'search_release'  'aquarius':1
                                     'search_rest'  '8ohdear':2,3 'europop':4 'prev':5 'prevset':1 'set':6
                                    'search_combo'  '8ohdear':6,7 'aqua':3B 'aquarius':4C 'europop':8 'freaky':1A 'friday':2A 'prev':9 'prevset':5 'set':10
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['q-bass-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800410.037377  (2022-09-10 11:00:10)
                             'size'  3616768