======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '400'
                                          'artist'  'Lemon Jelly'
                                     'text_people'  ''
                                         'release'  'Lemonjelly.ky'
                                           'title'  'In the Bath'
                                           'quals'  "['q-bass-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'Easy Listening'
                                             'bpm'  '112.9'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Lemonjelly.ky'
'TBPM' (BPM (beats per minute))                     '112.9'
'TCON' (Content type, a.k.a. Genre)                 'Easy Listening'
'TIT2' (Title/songname/content description)         'In the Bath'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Lemon Jelly'
'TRCK' (Track number/Position in set)               '1'
'TXXX:MusicBrainz Album Id'                         '502cf184-caaa-4c77-ab81-87ff38c30c34'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '4cbbf0d6-6c78-4e3d-ab25-91b13603cf7c'
'TXXX:MusicBrainz TRM Id'                           '0f88841d-0778-4802-8993-e7f2bfee977b'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'ee9394ef-4979-4d7d-86ad-ed7a4f6d1aea')

========================== row from database ==========================
                                              'id'  1538592
                                            'path'  /data/Music/Other/PrevSet/[6calmer]/Lemon Jelly/In the Bath.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  400
                                           'genre'  Easy Listening
                                        'filesize'  8019968
                                           'mtime'  1662800394
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [6calmer] Easy Listening
                                      'tag_artist'  Lemon Jelly
                                     'tag_release'  Lemonjelly.ky
                                       'tag_title'  In the Bath
                                             'bpm'  112.9
                                    'search_title'  'bath':3 'in':1 'the':2
                                   'search_artist'  'jelly':2 'lemon':1
                                  'search_release'  'ky':2 'lemonjelly':1 'lemonjellyky':3
                                     'search_rest'  '6calmer':2,3 'easy':4 'listening':5 'prev':6 'prevset':1 'set':7
                                    'search_combo'  '6calmer':10,11 'bath':3A 'easy':12 'in':1A 'jelly':5B 'ky':7C 'lemon':4B 'lemonjelly':6C 'lemonjellyky':8C 'listening':13 'prev':14 'prevset':9 'set':15 'the':2A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['q-bass-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800393.8978982  (2022-09-10 10:59:53)
                             'size'  8019968