======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '196'
                                          'artist'  'Juli'
                                     'text_people'  ''
                                         'release'  'Es ist Juli'
                                           'title'  'Perfekte Welle'
                                           'quals'  "['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '112.1'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=204)
'TALB' (Album/Movie/Show title)                     'Es ist Juli'
'TBPM' (BPM (beats per minute))                     '112.1'
'TDOR' (Original release time)                      '2004'
'TIT2' (Title/songname/content description)         'Perfekte Welle'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Juli'
'TRCK' (Track number/Position in set)               '6'
'TXXX:MusicBrainz Album Id'                         'b32b3292-55db-4883-adaf-786171f381a1'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '9a593aff-62c9-40bd-9631-1697798adb63'
'TXXX:MusicBrainz TRM Id'                           '9ca70e72-e9d3-4dc5-bbc0-c044a485a973'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'abe6ce11-6783-4218-b9d6-2ba9c81420b9')

========================== row from database ==========================
                                              'id'  1538810
                                            'path'  /data/Music/Other/PrevSet/[0yay1]/zUnsorted/Juli - Perfekte Welle (Es ist Juli).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  196
                                           'genre'  
                                        'filesize'  4727118
                                           'mtime'  1662800378
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [0yay1] zUnsorted (Es Juli)
                                      'tag_artist'  Juli
                                     'tag_release'  Es ist Juli
                                       'tag_title'  Perfekte Welle
                                             'bpm'  112.1
                                    'search_title'  'perfekte':1 'welle':2
                                   'search_artist'  'juli':1
                                  'search_release'  'es':1 'ist':2 'juli':3
                                     'search_rest'  '0yay1':2,3 'es':5,6 'juli':7,8 'prev':9 'prevset':1 'set':10 'unsorted':12 'z':11 'zunsorted':4
                                    'search_combo'  '0yay1':8,9 'es':4C,11,12 'ist':5C 'juli':3B,6C,13,14 'perfekte':1A 'prev':15 'prevset':7 'set':16 'unsorted':18 'welle':2A 'z':17 'zunsorted':10
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800378.3504  (2022-09-10 10:59:38)
                             'size'  4727118