======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '100'
                                          'artist'  'Richard Cheese'
                                     'text_people'  ''
                                         'release'  'Lounge Against the Machine'
                                           'title'  'Last Resort'
                                           'quals'  "['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-2', 'q-vocals-3']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '16'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '91.1'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Lounge Against the Machine'
'TBPM' (BPM (beats per minute))                     '91.1'
'TCMP'                                              '0'
'TDRC' (Recording time)                             '2000-10-17'
'TDRL' (Release time)                               '2000-10-17'
'TDTG' (Tagging time)                               '2007-09-14 05:44:39'
'TIT2' (Title/songname/content description)         'Last Resort'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Richard Cheese'
'TRCK' (Track number/Position in set)               '8/16'
'TSOP' (Performer sort order)                       'Cheese, Richard'
'TXXX:MusicBrainz Album Artist'                     'Richard Cheese'
'TXXX:MusicBrainz Album Artist Id'                  '9bf79f68-c064-44a1-8c2c-5764f1d7c016'
'TXXX:MusicBrainz Album Artist Sortname'            'Cheese, Richard'
'TXXX:MusicBrainz Album Id'                         '4fecbf14-179d-41fb-9a39-7eb44a4c4634'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '9bf79f68-c064-44a1-8c2c-5764f1d7c016'
'TXXX:MusicBrainz Non-Album'                        '0'
'TXXX:MusicIP PUID'                                 '7ed82d14-a46d-f5f8-5b9d-34211cfb3831'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '2'
'TXXX:q-vocals'                                     '3'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'a0f76d18-5cc0-4b8c-a650-14fe8a7d6251')

========================== row from database ==========================
                                              'id'  1538152
                                            'path'  /data/Music/Other/PrevSet/[9amusing]/Richard Cheese/Last Resort.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  100
                                           'genre'  
                                        'filesize'  1605345
                                           'mtime'  1662800511
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9amusing]
                                      'tag_artist'  Richard Cheese
                                     'tag_release'  Lounge Against the Machine
                                       'tag_title'  Last Resort
                                             'bpm'  91.1
                                    'search_title'  'last':1 'resort':2
                                   'search_artist'  'cheese':2 'richard':1
                                  'search_release'  'against':2 'lounge':1 'machine':4 'the':3
                                     'search_rest'  '9amusing':2,3 'prev':4 'prevset':1 'set':5
                                    'search_combo'  '9amusing':10,11 'against':6C 'cheese':4B 'last':1A 'lounge':5C 'machine':8C 'prev':12 'prevset':9 'resort':2A 'richard':3B 'set':13 'the':7C
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-2', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800511.0501165  (2022-09-10 11:01:51)
                             'size'  1605345