======================== unified (from filesystem) ========================
                                         'bitrate'  '128.004'
                                        'duration'  '233'
                                          'artist'  'Weird Al Yankovic'
                                     'text_people'  ''
                                         'release'  'Greatest Hits II'
                                           'title'  'Polka Your Eyes Out'
                                           'quals'  "['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'Comedy'
                                             'bpm'  '120.3'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:eng'                            'ogg had 128 kbps 44100 Hz'
'TALB' (Album/Movie/Show title)                     'Greatest Hits II'
'TBPM' (BPM (beats per minute))                     '120.3'
'TCON' (Content type, a.k.a. Genre)                 'Comedy'
'TDRC' (Recording time)                             '1994'
'TIT2' (Title/songname/content description)         'Polka Your Eyes Out'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Weird Al Yankovic'
'TRCK' (Track number/Position in set)               '10'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'

========================== row from database ==========================
                                              'id'  1538367
                                            'path'  /data/Music/Other/PrevSet/[9amusing]/Weird Al Yankovic/Polkas/Polka Your Eyes Out.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  233
                                           'genre'  Comedy
                                        'filesize'  3738936
                                           'mtime'  1662800558
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9amusing] Polkas Comedy
                                      'tag_artist'  Weird Al Yankovic
                                     'tag_release'  Greatest Hits II
                                       'tag_title'  Polka Your Eyes Out
                                             'bpm'  120.3
                                    'search_title'  'eyes':3 'out':4 'polka':1 'your':2
                                   'search_artist'  'al':2 'weird':1 'yankovic':3
                                  'search_release'  'greatest':1 'hits':2 'ii':3
                                     'search_rest'  '9amusing':2,3 'comedy':5 'polkas':4 'prev':6 'prevset':1 'set':7
                                    'search_combo'  '9amusing':12,13 'al':6B 'comedy':15 'eyes':3A 'greatest':8C 'hits':9C 'ii':10C 'out':4A 'polka':1A 'polkas':14 'prev':16 'prevset':11 'set':17 'weird':5B 'yankovic':7B 'your':2A
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4']
                                      'lastfmtags'  []
                                        'tag_date'  1994
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800557.6086137  (2022-09-10 11:02:37)
                             'size'  3738936