======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '141'
                                          'artist'  'Kelpe'
                                     'text_people'  ''
                                         'release'  'Cambio Wechsel'
                                           'title'  'Moving Picture Three'
                                           'quals'  "['q-bass-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  ''
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'IDM'
                                             'bpm'  '91.1'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000004E5 0000043F 0000D49F 0000CA8F 00017305 00017305 00008D21 00008E71 '
 '0001CA78 00017424')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000858 00000000005F5698 00000000 00566249 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '12+4A3A69303E497ABC4AE6B3A75F7FDC6D+13752891'
'TALB' (Album/Movie/Show title)                     'Cambio Wechsel'
'TBPM' (BPM (beats per minute))                     '91.1'
'TCON' (Content type, a.k.a. Genre)                 'IDM'
'TDRC' (Recording time)                             '2009'
'TENC' (Encoded by)                                 'iTunes 8.0.2.20'
'TIT2' (Title/songname/content description)         'Moving Picture Three'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kelpe'
'TRCK' (Track number/Position in set)               '05'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'

========================== row from database ==========================
                                              'id'  1538354
                                            'path'  /data/Music/Other/PrevSet/[6calmer]/Kelpe/Cambio Wechsel/05. Moving Picture Three.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  141
                                           'genre'  IDM
                                        'filesize'  5865242
                                           'mtime'  1662800433
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [6calmer] 05. IDM
                                      'tag_artist'  Kelpe
                                     'tag_release'  Cambio Wechsel
                                       'tag_title'  Moving Picture Three
                                             'bpm'  91.1
                                    'search_title'  'moving':1 'picture':2 'three':3
                                   'search_artist'  'kelpe':1
                                  'search_release'  'cambio':1 'wechsel':2
                                     'search_rest'  '05':4,5 '6calmer':2,3 'idm':6 'prev':7 'prevset':1 'set':8
                                    'search_combo'  '05':10,11 '6calmer':8,9 'cambio':5C 'idm':12 'kelpe':4B 'moving':1A 'picture':2A 'prev':13 'prevset':7 'set':14 'three':3A 'wechsel':6C
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  2A
                                           'quals'  ['q-bass-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1']
                                      'lastfmtags'  []
                                        'tag_date'  2009
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800432.9926362  (2022-09-10 11:00:32)
                             'size'  5865242