======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '266'
                                          'artist'  'Galleon'
                                     'text_people'  ''
                                         'release'  'Galleon'
                                           'title'  'The Best World'
                                           'quals'  "['q-bass-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '92.2'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'APIC:Cover Image'                                  type PictureType.COVER_FRONT (Cover (front)) b'Cover Image'
                                     
'TALB' (Album/Movie/Show title)                     'Galleon'
'TBPM' (BPM (beats per minute))                     '92.2'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'The Best World'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Galleon'
'TRCK' (Track number/Position in set)               '0'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.63 dB'
'TXXX:replaygain_track_peak'                        '0.432356'

========================== row from database ==========================
                                              'id'  1538341
                                            'path'  /data/Music/Other/PrevSet/[9zdesorted]/Galleon/The Best World.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  266
                                           'genre'  
                                        'filesize'  6411034
                                           'mtime'  1662800568
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9zdesorted]
                                      'tag_artist'  Galleon
                                     'tag_release'  Galleon
                                       'tag_title'  The Best World
                                             'bpm'  92.2
                                    'search_title'  'best':2 'the':1 'world':3
                                   'search_artist'  'galleon':1
                                  'search_release'  'galleon':1
                                     'search_rest'  '9zdesorted':2,3 'prev':4 'prevset':1 'set':5
                                    'search_combo'  '9zdesorted':7,8 'best':2A 'galleon':4B,5C 'prev':9 'prevset':6 'set':10 'the':1A 'world':3A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['q-bass-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2']
                                      'lastfmtags'  []
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800568.3042684  (2022-09-10 11:02:48)
                             'size'  6411034