======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '313'
                                          'artist'  'Utada'
                                     'text_people'  ''
                                         'release'  'Exodus'
                                           'title'  'Kremlin Dusk'
                                           'quals'  "['q-bass-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'R&B'
                                             'bpm'  '84.1'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Exodus'
'TBPM' (BPM (beats per minute))                     '84.1'
'TCON' (Content type, a.k.a. Genre)                 'R&B'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Kremlin Dusk'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Utada'
'TRCK' (Track number/Position in set)               '10'
'TXXX:MusicBrainz Album Id'                         '4132dcb6-2d33-4bf3-bae7-ed5734d57fc8'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '155e7cfa-694f-45ed-96bd-619debc24b98'
'TXXX:MusicBrainz TRM Id'                           'f7df738b-a435-46af-9c10-98944d4b4c95'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'b0661067-8b31-4b36-9845-4bd8b29f56b5')

========================== row from database ==========================
                                              'id'  1538732
                                            'path'  /data/Music/Other/PrevSet/[0yay1]/zUnsorted/Utada - Kremlin Dusk (Exodus).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  313
                                           'genre'  R&B
                                        'filesize'  7536395
                                           'mtime'  1662800380
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [0yay1] zUnsorted (Exodus) R&B
                                      'tag_artist'  Utada
                                     'tag_release'  Exodus
                                       'tag_title'  Kremlin Dusk
                                             'bpm'  84.1
                                    'search_title'  'dusk':2 'kremlin':1
                                   'search_artist'  'utada':1
                                  'search_release'  'exodus':1
                                     'search_rest'  '0yay1':2,3 'b':8 'exodus':5,6 'prev':10 'prevset':1 'r':7 'rb':9 'set':11 'unsorted':13 'z':12 'zunsorted':4
                                    'search_combo'  '0yay1':6,7 'b':12 'dusk':2A 'exodus':4C,9,10 'kremlin':1A 'prev':14 'prevset':5 'r':11 'rb':13 'set':15 'unsorted':17 'utada':3B 'z':16 'zunsorted':8
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['q-bass-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800379.9383488  (2022-09-10 10:59:39)
                             'size'  7536395