======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '230'
                                          'artist'  'Ladytron'
                                     'text_people'  ''
                                         'release'  '604'
                                           'title'  'Discotraxx'
                                           'quals'  "['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-2']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'Electronic'
                                             'bpm'  '119.8'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=153)
'TALB' (Album/Movie/Show title)                     '604'
'TBPM' (BPM (beats per minute))                     '119.8'
'TCON' (Content type, a.k.a. Genre)                 'Electronic'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Discotraxx'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ladytron'
'TRCK' (Track number/Position in set)               '2'
'TXXX:MusicBrainz Album Id'                         '592cae4b-6a97-4360-b551-e44e59052bbc'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'live'
'TXXX:MusicBrainz Artist Id'                        'b45335d1-5219-4262-a44d-936aa36eeaed'
'TXXX:MusicBrainz TRM Id'                           '6ba65067-ca8e-4a7b-bbb9-2a867b4096c7'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'f6bd95ae-21ed-4fb5-a8b8-965040923ee6')

========================== row from database ==========================
                                              'id'  1538671
                                            'path'  /data/Music/Other/PrevSet/[1electro-harder]/Ladytron/Discotraxx.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  230
                                           'genre'  Electronic
                                        'filesize'  5537998
                                           'mtime'  1662800301
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [1electro harder] Electronic
                                      'tag_artist'  Ladytron
                                     'tag_release'  604
                                       'tag_title'  Discotraxx
                                             'bpm'  119.8
                                    'search_title'  'discotraxx':1
                                   'search_artist'  'ladytron':1
                                  'search_release'  '604':1
                                     'search_rest'  '1electro':2,3 'electronic':6 'harder':4,5 'prev':7 'prevset':1 'set':8
                                    'search_combo'  '1electro':5,6 '604':3C 'discotraxx':1A 'electronic':9 'harder':7,8 'ladytron':2B 'prev':10 'prevset':4 'set':11
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-2']
                                      'lastfmtags'  []
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800300.7569046  (2022-09-10 10:58:20)
                             'size'  5537998