======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '423'
                                          'artist'  'Lemon Jelly'
                                     'text_people'  ''
                                         'release'  'Lost Horizons'
                                           'title'  'Space Walk'
                                           'quals'  "['q-bass-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'Easy Listening'
                                             'bpm'  '104.9'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=153)
'PRIV:www.mexp.dk:\x01\x0b\x00\x00\x00\x00good stuff\x01\x0b\x00\x00\x00\x00background\x01\x05\x00\x00\x00\x00slow'  PRIV(owner='www.mexp.dk', data=b'\x01\x0b\x00\x00\x00\x00good stuff\x01\x0b\x00\x00\x00\x00background\x01\x05\x00\x00\x00\x00slow')
'TALB' (Album/Movie/Show title)                     'Lost Horizons'
'TBPM' (BPM (beats per minute))                     '104.9'
'TCON' (Content type, a.k.a. Genre)                 'Easy Listening'
'TIT2' (Title/songname/content description)         'Space Walk'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Lemon Jelly'
'TRCK' (Track number/Position in set)               '2'
'TXXX:MusicBrainz Album Id'                         '0f0f1e17-9e51-4398-8404-2d4c96f9d0e0'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '4cbbf0d6-6c78-4e3d-ab25-91b13603cf7c'
'TXXX:MusicBrainz TRM Id'                           'baaf8a2e-6442-4d42-b67f-b44b57e87f80'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'556e8ade-b208-4e9f-987a-bc12015dd3a5')

========================== row from database ==========================
                                              'id'  1538719
                                            'path'  /data/Music/Other/PrevSet/[6calmer]/Lemon Jelly/Space Walk.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  423
                                           'genre'  Easy Listening
                                        'filesize'  8466432
                                           'mtime'  1662800409
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [6calmer] Easy Listening
                                      'tag_artist'  Lemon Jelly
                                     'tag_release'  Lost Horizons
                                       'tag_title'  Space Walk
                                             'bpm'  104.9
                                    'search_title'  'space':1 'walk':2
                                   'search_artist'  'jelly':2 'lemon':1
                                  'search_release'  'horizons':2 'lost':1
                                     'search_rest'  '6calmer':2,3 'easy':4 'listening':5 'prev':6 'prevset':1 'set':7
                                    'search_combo'  '6calmer':8,9 'easy':10 'horizons':6C 'jelly':4B 'lemon':3B 'listening':11 'lost':5C 'prev':12 'prevset':7 'set':13 'space':1A 'walk':2A
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['q-bass-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800408.9734116  (2022-09-10 11:00:08)
                             'size'  8466432